Squad strength key for Ferguson

ALEX FERGUSON insists his players understand the need for rotation at Manchester United even if they do not accept it.

Ferguson dropped Carlos Tevez to the bench for Sunday’s draw at Chelsea and Jonny Evans is bracing himself for the axe against Bolton today as Nemanja Vidic returns from suspension.

There is also a possibility Wayne Rooney or Dimitar Berbatov could be left out at Old Trafford.