# 4. Julian Weigl
Borussia Dortmund have always boasted the brightest crop of young talent in world football. However, they rarely manage to keep hold of these players, mainly due to their their financial restraints.
Julian Weigl appears to be another highly talented player that may fall into this category. The German midfielder has made 31 appearances for his team this season so far. His precision and passing accuracy makes him a vital player in the heart of the midfield.
The 22-year-old is a brilliant reader of the game, and his interceptions and concentration on the pitch could prove something of high importance at Man United.
Reports claim that Mourinho had scouts sent to Germany to watch the player closely.
A fee close to £40 million is understood to be tempting enough for the German side to consider selling the player.