#4 Jadon Sancho (Borussia Dortmund / England) - £18m
In March 2015 Jadon Sancho left Watford's academy and moved to Manchester City for £66k at the age of only 14. After a fantastic European Championship U-17 in May 2017, City's chairman said that Sancho will be promoted to the senior side.
The young winger couldn't come to an agreement on a new contract so he was released from Manchester City's pre-season tour squad. After a summer filled with transfer speculations, Sancho surprisingly moved on the deadline day to Borussia Dortmund. Manchester City retained a chance on him, including a buy-back to the transfer.
The 2017/18 season for Sancho was a difficult one as he missed a large number of games because of injuries. The Englishman still proved his worth to Borussia by playing from whistle to whistle in all of the last four league games. He had a spectacular performance against Bayern Leverkusen, scoring once and assisting twice.
Sancho is expected to be a first-team player for Borussia this season. The Wonderkid is also very likely to get his first call-up to the National team this September.