3) Bastian Schweinsteiger (Bayern Munich)
A potentially superb signing, United have been linked on a number of occasions with Bastian Schweinsteiger this summer as they look for a solution to their midfield problems. The experienced German international has been with Bayern Munich for his entire career so far, establishing himself as one of the best midfielders in the world as he formed a key part of their treble-winning side in 2013, as well as proving pivotal to the German national team in their World Cup triumph in Brazil earlier this summer. A world class, experienced winner, this would no doubt be a superb signing by van Gaal if he can pull it off.