Picture this: Top 20 most valuable under-21 players in the world for 2016/17

Manchester United and France forward Anthony Martial is the most valuable young player in the world ahead of the 2016/17 season after topping the latest edition of the Soccerex 20 U-21 Report by Prime Time Sport.

The Soccerex Report lists the 20 most valuable players in the world aged 21 or under.

It utilises a Football Value Index compiled by Prime Time Sport and takes and considers the player's age, position, current club, contract length, market value perception, international caps, minutes played, goals, injuries and technical quality from a variety of sources to determine a value.