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About the CIES Football Observatory

The CIES Football Observatory is a research group created in 2005 within the Swiss-based Centre International d’Étude du Sport (CIES). It specialises in the statistical analysis of football, in particular in the areas of demographics, transfer values and performance (technical, tactical, physical). Click here for more information.

About the CIES

The International Centre for Sports Studies (CIES) is an independent study centre located in Neuchâtel, Switzerland. It was created in 1995 as a joint venture between the Fédération Internationale de Football Association (FIFA), the University of Neuchâtel, the City and State of Neuchatel. Click here for more information. Click here for more information.

Record high of expatriates in the best ranked teams

During last season, the percentage of minutes played by club-trained footballers reached a new record low: 14.3%. In the English Premier League, players who spent at least three years between the ages of 15 and 21 in their employer club never played a fewer percentage of minutes than in 2014/15: 10.2%. The minimal level of minutes played by club-trained footballers was recorded in Italy: 8.5%.

The percentage of minutes played by expatriates is stable at around 46%. However, the percentage of players who grew up in a different country than that of their employer club reached a new record high among the five best ranked teams per league: 59.6%. This percentage was never as high as in 2014/15 in three leagues out of five: England (77.1%), Spain (57.1%) and Germany (53.1%). It is also very high in the Italian Serie A: 71.4%.

Transfer value: Messi, the 280 million euro man

The CIES Football Observatory is also proud to be able to present for the first time the probabilities of fee paying transfers for big-5 league players. This was a major achievement of the research work carried out by our academic team during the last year. Many expensive footballers are to be found in the top-100 of this ranking, such as Raheem Sterling, Alexis Sánchez, Antoine Griezmann, Harry Kane and Philippe Coutinho.

More information is available in issue number 115 of the Big-5 Weekly Post (the last before the summer break). The full data is presented in the sixth edition of the CIES Football Observatory Monthly Report. This publication also explains the unique methodology developed by our research team to estimate both transfer values and transfer probabilities of football players.

Assessment of the big-5 league predictions

U21 players: Premier League at the bottom of the table

The clubs per league having the most relied on U21 players are Monaco (34.6%), Valencia (25.5%), Empoli (23.3%), Bayer Leverkusen (23.1%) and Liverpool (19.8%). Conversely, U21 footballers played less than 2% of minutes in 27 teams out of 98, including at Champions League finalists Barcelona and Juventus.

All the data is available in issue number 113 of the CIES Football Observatory Weekly Post.

Performance analysis : best clubs and players of the season

For more information, please contact us at football.observatory@cies.ch.

The power of youth: age of first-team inclusion

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