My thoughts too with the way Rooney/Hernandez has worked I wouldn't be surprised to see us keep Macheda as a direct fill in for Hernandez and if we sign Sneijder he can play the advanced mid/deep lying forward role that Rooney plays - could mean the end of Berba though.
I think Berba will stay. One injury to Rooney or Chicha and suddenly we are relying on Owen/Macheda/Welbeck to win us the title.