We have Nani, Anderson, Kagawa, Cleverley and Giggs in the middle, Valencia on the right with Zaha as cover. On the left we have Young and Nani as cover. If Nani leave, Adnan Januzaj will step in as cover. He's only 18, skinny frame much like Fletcher but with good technique.
Carrick is almost certain to start as a defensive midfield role which leaves Anderson,Kagawa, Cleverley and Giggs. With Giggs likely to play only a handful of games,the other 3 were disappointing last season. Anderson and Cleverley has fitness issues and Kagawa is adapting and still finding his way. None of these players can shoot which leaves Rooney as the obvious choice. The other possibility is to play RVP in that role but methink is far more effective upfront. United need to step up and get a top player to pull the strings in the middle.