4. Sami Khedira
With 285 club appearances (as of March 8th 2013) he is the most experienced midfielder in this list, however he is yet still young at 25, so he has plenty of playing time left in his career. With leagues and cups under his belt in both Spain and Germany, he has proved his worth to Real Madrid and Stuttgart respectively, proving that his technical skills are competent, an asset that can benefit the Premier League and more specifically United. He is characterised and praised by his ability to cover vast swathes of the pitch, whether it be breaking up opposition attacks or dictating the pace of his team's forays into their attacking third. Now, this may evoke images of Paul Scholes' terrior-like tenacity in his younger years, something that United and their loyal followers feel that they lack at the moment, so this plugs the gap. Along with other foreigners mentioned, they aspire to play in the Premier League; to play alongside and against worldwide stars already settled in there. The pace and the fierceness after all will benefit and enhance his game.