The Weekly Post number 479 presents the 100 players in the world who have not yet celebrated their 21st birthday with the highest transfer value according to the CIES Football Observatory statistical model. The Spanish prodigy Lamine Yamal (Barcelona, €180.9m*) outranks Alejandro Garnacho (Manchester United, €114.8m) and Warren Zaïre-Emery (Paris St-Germain, €109.0m). A fourth youngster is valued at over €100 million: Sávio Moreira (Manchester City, €101.0m).

In defensive positions, Guillaume Restes (Toulouse, €28.8m) tops the list for goalkeepers, Lucas Beraldo (Paris St-Germain, €70.3m) for centre backs and Rico Lewis (Manchester City, €87.2m) for full/wing backs. Three other U18 players in addition to Yamal feature in the top 100: Ecuadorian Kendry Paez (Independiente del Valle, on loan from Chelsea), Brazilian Estevão Willian (Palmeiras, also on loan from Chelsea) and Spaniard Pau Cubarsí (Barcelona).

Seventeen leagues are represented in the top 100, with a maximum of 26 players for the Premier League, followed by Ligue 1 (17) and La Liga (12). In terms of the clubs to which top-ranked footballers belong, Brighton & Hove (6 players) are ahead of Chelsea, Paris St-Germain and Barcelona (4). This open access and peer reviewed scientific paper details the methodology used to determine fair prices for professional football players worldwide.

* All figures mentioned include eventual add-ons and refer to 100% of transfer rights.

Click here to see the estimates for the best-valued players per club.