#5. Paul Pogba – Manchester United
This is another case of a club letting a young player go but this time the player was already at the club. Paul Pogba signed for Manchester United from Le Havre in a controversial move in 2009. He spent a few seasons in the youth team and was close to play for the first team. Manager Sir Alex Ferguson even went on record saying that if they didn’t play the midfielder in the first team then he would soon leave. Just three first team appearances and one season later and Pogba did leave for Italian giants Juventus. The Frenchman went straight into the starting line-up and has stayed there ever since. Pogba is apparently in talks with Manchester United over a return to the club in what would be the most expensive transfer of all time.