Issue number 374 of the CIES Football Observatory Weekly Post ranks 60 leagues worldwide according to the percentage of minutes played since the 1st of January 2021 by footballers that did not yet celebrate their 21st birthday at matches played. The greatest figures were recorded in the Venezuelan (18.8%) and Danish top divisions (16.5%). The Saudi Pro League is at the opposite end (1.6%).

Regarding the average age of line-ups fielded, the lowest values were recorded in the Croatian top division (25.3 years of age), the Mexican Liga Expansión and the Danish Superliga. At the other end of the spectrum are three non-European leagues: the Paraguayan top division (28.9 years of age), the Thai League 1 and the Primera División in Bolivia.

More information on clubs from 31 top divisions of UEFA member associations is available for free in the exclusive CIES Football Observatory Demographic Atlas. Additional data is published on our social media accounts: Twitter, Instagram and Facebook. Do not hesitate to follow us to gain even more knowledge on our beloved beautiful game!

Issue number 373 of the CIES Football Observatory Weekly Post ranks 90 top divisions worldwide according to the average tenure duration of coaches (as per last 1st March). The values stretch from 1,536 days in Northern Ireland to only 156 days in Saudi Arabia. More exclusive analysis on coaches is available in the 73th edition of the Monthly Report.

The average tenure duration of coaches in Europe is greater than in other continents: 506 days for clubs in UEFA member associations and 402 days for teams in other continents. An even shorter average tenure duration was recorded in clubs from the South American confederation: 303 days. This goes hand in hand with a greater player turnover.

The average tenure duration is much higher than the median one: 459 days compared to 243 days. This reflects the fact that some coaches are able to hold their position for much longer than the usual period. However, on the 1st of March, only 20% of coaches had been in their position for more than two years. At the opposite, 39% were in place since less than six months.

Issue number 372 of the CIES Football Observatory Weekly Post presents the net spending on international transfers concluded since July 2017 by clubs of the 40 most active nations from an incoming and outcoming fee volume perspective. England (- €4.35 billion) and Portugal (+€1.15 billion) recorded the most negative and, respectively, positive trade balances.

Italy has the second most negative trade balance on international transfers concluded since the start of the 2017/18 season (-€910 million), followed by China, Russia, Saudi Arabia and Spain. At the opposite end of the table, Brazil (+€1.02 billion) is just behind Portugal and outranks the Netherlands, France, Argentina and Belgium.

The data includes eventual add-ons irrespective of their effective payment, as well as sell-on percentages. However, this information, such as that on transfer fees themselves, is not always available. The figures presented are thus to be considered approximations that are as accurate as possible. FIFA’s annual reports with official aggregated data are available for free here.

Issue number 371 of the CIES Football Observatory Weekly Post ranks 38 leagues worldwide according to the InStat data on stoppage due to fouls. The two greatest figures were recorded for Latin American leagues, the Mexican and Colombian top divisions, while the highest fouls’ pause time out of the 33 European leagues surveyed was measured in Portugal.

All the five Latin American championships included in the sample are in the top 10 positions of the rankings. On average, the stoppage time for fouls is 15’43” in Latin America and 13’04” in Europe. This reflects a higher number of fouls per match (on average 27.0 vs 25.7), but also a greater time pause per foul (35.2” vs 30.8”).

The extreme values for fouls per match were recorded in Serbia (30.7) and the Netherlands (20.3), while those for stoppage time per foul were measured in Colombia (38.3”) and Belarus (25.3”). The data refers to the ongoing season for winter leagues and to the 2021 season for summer ones (including current season’s matches if already started).

Dear subscribers, thanks to the vigilance of many of you, we have found several omissions in our 370th Weekly Post. We are really sorry about it. Finally, the Portuguese side of SL Benfica leads the table with about €379 M.

Real Madrid ran the second most profitable academy from an economic perspective during the period considered (€330 M), while AS Monaco completes the podium (€285 M) ahead of the Dutch side of AFC Ajax (€283 M). Flamengo (13th), River Plate (27th) and Santos (28th) are in the top three positions for non-European teams.

With €2.03 billion, English clubs generated then most money by the transfer of academy graduates since July 2015, just ahead French teams (€1.61 billion). Spanish clubs (€1.39 billion) complete the podium per nation, ahead of the Italians (€1.11 billion), the Brazilians (€951 M), the Germans (€916 M), the Portuguese (€788 M), the Dutch (€709 M) and the Argentineans (€566 M).

Issue number 370 of the CIES Football Observatory Weekly Post presents the top 50 of clubs worldwide having generated the most incomes since July 2015 from the transfer of players graduated from their youth academy. Thanks to the paying fee transfer of nine players trained, including Kylian Mbappé’s record one to PSG, AS Monaco (€246 M) tops the table, ahead of Real Madrid (€235 M) and Olympique Lyonnais (€228 M).

Six teams outside of big-5 league countries are in the top 20 positions of the rankings: AFC Ajax (4th, €211 M generated by the transfer of ten academy pupils), SL Benfica (5th, €202 M), PSV Eindhoven (8th, 142 M), Dinamo Zagreb (11th, €110 M), Sporting CP (12th, €106 M not including the further €20 M to come for Rafael Leão following the recent CAS award), RSC Anderlecht (16th, 91 M), as well as RB Salzburg (20th, € 76 M).

With €1.17 billion, French clubs generated then most money by the transfer of youth academy players since July 2015, just ahead English teams (€1.13 billion). Despite their low propensity to field club-trained footballers, Italian teams complete the podium with €743 M (with Atalanta 1st), ahead of the Spanish (€703 M, of which one third by Real Madrid), the Dutch (€564 M), the German (€551 M, with Bayer Leverkusen 1st) and the Brazilians (€403 M).

The 72nd Monthly Report presents the method developed by the CIES Football Observatory to rank footballers according to their style of play. From the data gathered by InStat, the study notably calculates statistical distances between players, a particularly useful approach from a scouting perspective. The sample is composed of 7,215 footballers from clubs in 36 top and second division leagues across Europe.

The analysis reveals that, for example, James Maddison is the big-5 league footballer closest to Kylian Mbappé from the perspective of the technical actions performed. This exercise can be carried out for any player. Always at big-5 league level, Dusan Vlahovic is the footballer who is closest to Erling Haaland, Paulo Dybala to Lionel Messi, Romain Faivre to Neymar Junior, Dominik Szoboszlai to Kevin de Bruyne, Remo Freuler to Jorginho Frello or Jonathan Tah to Virgil van Dijk.

The study also puts forward footballers whose performances deviate most positively from those of teammates for each of the eight player profile classes built from a principal component analysis. The three youngest players in the top 10 of a class are Yvan Dibango (FC Isloch, 6th in the “Trippier” class), El Bilal Touré (Stade de Reims, 8th in the “Lukaku” class) and Khvicha Kvaratskhelia (Rubin Kazan, 9th in the “Sterling” class”).

Clubs and agents interested in knowing more about the work of our research group, notably the freshly developed Toolkit, are kindly invited to contact us.

Issue number 369 of the CIES Football Observatory Weekly Post ranks teams from 50 top divisions worldwide according to the number of players fielded in domestic league games during the last 365 days. For current big-5 league teams, the values stretch from an eye-staggering 55 players for Genoa down to only 27 for West Ham United.

The highest figure overall was recorded for Deportivo Pasto. The Colombians fielded up to 70 players in the 40 domestic league matches played during the last year. They outrank the Romanians of Dinamo Bucuresti and the Welsh of Cefn Druids (both 63 players). The four highest figures in the big-5 were all recorded for Italian Serie A teams: Genoa (55), Salernitana (53), Venezia (47) and Spezia (46).

The record figures for UEFA Champions League teams are much lower: 38 players for Paris St-Germain and 36 for Juventus. LOSC Lille and Manchester City are at the opposite end: 28 players for both. By league, the average values per club vary between 31 players in England and Moldavia, up to a maximum of 47 in Colombia.

More exclusive squad management policies data and many other key statistical indicators are available in the freshly conceived CIES Football Observatory Toolkit, a unique platform specifically devised for club directors and top management. Do not hesitate to contact us (football.observatory@unine.ch) to know more about this brand new tool.

Dear subscriber and friend of football,

The CIES Football Observatory academic team devised a brief and anonymous questionnaire aiming at understanding what people passionate about football consider as worrying in the beautiful game today. We would be grateful if you could take one minute to answer.

The main findings will be published online on our website and social media channels (Facebook, Twitter, Instagram). A report outlining the main results of a previous survey on professional football is available here.

Please click here to complete the questionnaire. Thank you!

Issue number 368 of the CIES Football Observatory Weekly Post crunched the InStat data on goal scoring chances and effective playing time for 36 European leagues since 2018/19 (or 2018) to determine the level of “game openness”. The findings show that clubs in leagues from the North/West part of the continent tend to play more openly than those from the South/East.

With an average of 11.7 chances and 63’21” effective time per match, the Dutch Eredivisie recorded the highest Game Openness Index, ahead of the German Bundesliga and the Belgian Pro League. At the opposite end is the Spanish Segunda División with just 8.7 chances and 55’06” of effective time. The Greek Super League and the Romanian Liga I also are at the bottom three of the rankings.

On average, the effective playing time of matches in the 36 leagues survey is just above 59 minutes: from 63’21” in the Netherlands to 54’55” in the Czech Republic. Teams create on average 10.2 goal scoring chances per match: from 11.9 in the German Bundesliga to 8.7 in both the Spanish second division and the Greek top one.

Issue number 367 of the CIES Football Observatory Weekly Post ranks current big-5 league clubs according to their net spending on transfer operations concluded over the last ten seasons. Manchester United tops the table with a negative balance of more than one billion euro, ahead of Manchester City and Paris St-Germain. Fourteen English clubs are in the top 20 of clubs with the most negative net transfer spending.

LOSC Lille clubs stands out at the opposite end with a positive transfer balance of €349 million over the last decade. The French side outranks league rivals Olympique Lyonnais and three Italian Serie A teams: Genoa, Udinese and Atalanta. The top three of current big-5 league clubs having generated the most incomes from transfers since 2012/13 are Chelsea, Monaco and Atlético Madrid. In total, 52 out 98 clubs have a positive net spending. This ratio is one (Brentford) out of 20 for Premier League teams.

Gathered with the greatest care through the cross-checking of all possible sources, whether official or unofficial, the data includes eventual add-on fees included in the deals, regardless of their actual payment. Within the limits of available information, incomes deriving from sell-on fees are also taken into account.

Issue number 366 of the CIES Football Observatory Weekly Post presents the 100 players born in 2002 or after active in 31 European leagues outside of the big-5 with the highest InStat Index. The latter takes into consideration footballers’ pitch production depending on position played (centre back, winger, etc.) and the general level of the matches in which they participated.

The greatest score overall was recorded for AFC Ajax’s Ryan Gravenberch. Among midfielders, the Dutch talent ranks ahead Arsen Zakharyan (Dinamo Moscow) and Fábio Carvalho (Fulham). Running out contract, the latter is being courted by several major teams. The highest InStat Index for full backs was recorded for another AFC Ajax player who is attracting interest from clubs in the big-5: the 19-year-old Devyne Rensch.

The best score for other positions were measured for Oliver Dovin (Hammarby) among goalkeepers, Ilya Zabarnyi (Dynamo Kiev for centre backs and Jakub Kaminski (Lech Poznan) among forwards. Akinkunmi Amoo (Hammarby) and Sebastiano Esposito (Basel, on loan from Inter) complete the podium for strikers. The InStat Index for players from 36 European leagues is accessible for free in this exclusive tool. More information is available on demand.