Nemanja Vidic is reluctant to claim Manchester United have proved they're over the departures of Carlos Tevez and Cristiano Ronaldo.
"Ronaldo and Tevez are quality players, there is no question about that," Vidic said.
"But it is hard to say whether we have got over losing them. We will probably only know that at the end of the season.
"If we don't win trophies, people will say it is because they have gone, although that is not necessarily the case.
"At the moment we are doing well. We have had the best start in the four years I have been here.
"There is no question we have quality players but, for me, the really encouraging sign is that we are still not in the best form.
"You don't want to be at your highest level at this stage. We have to be ready for the most important games at the end."
