I personally see the problem with kagawa is that he don't play the way united plays. It's kind of hard to explain but for me personally , the team is used to playing / attacking with Rooney , which is very different from Kagawa's style . When you see Kagawa attack, there is alot of movement , pass - go - pass go - pass - go , more Barca / Arsenal like ?

Who can do that in midfield ? The one that comes to mind is Ando ( where he play as a midfield mastero role before changing his role ) . Also Clev , but he lacks of creativity , hence his short passes turns into nothing .