According to Di Marzio / Sky if we sell MDS, we are going for Emerson Palmieri. And just for that, I am all for staying Mattia here.
Also, seriously guys, he is not that bad. When he don't have medical problems (I know he had many lately) people watching matches are actually suprised with what he can do. You can joke and hate all you want, but I think some folks are too harsh on him.
Speaking off opinions, people should realise that Pellegrini was not a superstar in Cagliari and reports about him there were so-so. I am all for young talents, but just saying he is not that great (yet).