4) Mehdi Benatia (AS Roma)
A world class centre-back, United now face competition from Chelsea for the signing of AS Roma star Mehdi Benatia. Still, with the Red Devils badly in need of two signings in that part of the pitch after losing both Vidic and Rio Ferdinand – two of the club’s most important players down the years – Benatia is a must-sign for the club, and would surely have more chance of regular football at Old Trafford than at Stamford Bridge anyway.