1. Mats Hummels (Borussia Dortmund)
While this move seems the most unlikely of the lot, Borussia Dortmund center back Mats Hummels is the player that most United fans would prefer to sign in the summer. Hummels has been linked with a move to Old Trafford by the press and a move for the German would provide the perfect solution to United’s defensive problems.
Since his move from Bayern Munich, Hummels has excelled for Jurgen Klopp’s superb Dortmund team and is a fixture for the German national team as well. At 25-years-old, he is yet to reach his peak as a defender and any move for him would see United pay a hefty sum of money.
Rated as one of the best ball-playing defenders in world football, the German however is unlikely to be interested in moving to Old Trafford if United fail to qualify for the Champions League next season.