6. Marco Reus
The 23-year-old has been one of the stand-out performers of Borussia Dortmunds campaign this season, putting in some amazing individual performances that have helped his team to their second ever Champions League final. A player with brilliant close control and ability with both feet, Reus would be a perfect addition to an already strong United team, and would go along with the clubs tradition of putting faith in younger players. The German has notched up 14 goals in his 31 appearances so far for Dortmund, and whilst he only signed for the club at the beginning of last season, a sizable bid would undoubtedly tempt Jurgen Klopp to cash in on his prize midfielder, after having already done the same with Mario Gotze. If Dortmund were to win the Champions League final however, Reus may decide that his future lies in Germany