I don't think [hope more to the point] there will be drastic movement this summer, especially as in all likelihood there will be no European football next year. Saw what happened at Spurs last season when they changed half their squad and they have been left with a set of players that are new to the Premier league and have not integrated successfully.
Lot of people calling for likes of Cleverley, Fletcher, Fellaini, Young, Valencia to go, but they are perfectly adequate squad players, capable of doing the job against lower / mid table Premier league opposition. If they are happy to stay on those terms so be it.
4 out - Vida, Rio, Evra and Giggs - Losing a lot of experience / leadership here - senior players like Rooney, Carrick, Evans will need to step up on and off the pitch.
4 in - Centre half, left back, 2 Centre midfielders.