"I think that's inevitable," he said. "When you lose any players, your team plays differently no matter who you lose.
"We lost two very good players in Cristiano and Carlos, but Manchester United is a club that moves on and has remained a successful side.
"We have done that in recent years when we lost players of the ilk of David Beckham and Roy Keane, Ruud van Nistelrooy, Veron and players like that.
"People thought we would fall by the wayside but it didn't happen."