#4 Mauro Icardi (Inter Milan)

The world's biggest club's have been intently following Mauro Icardi's rise at Inter Milan. The Argentine has been in red-hot form for the Nerazzurri, scoring 18 goals in just 22 league games, so far this season.
The fact that Inter are bereft of UEFA Champions League football makes him even more accessible; with the right deal, he can be signed in the ongoing winter transfer window itself. However, there have been no reports linking the Red Devils to Icardi and the Argentinan has already stated his fierce desire to stay with the Italian outfit.
Nevertheless, seeing how he is challenging Ciro Immobile for the Capocannoniere this season, Mauro Icardi is worth a shot in the summer, if not in January.