United boss Sir Alex Ferguson has so far this summer signed Michael Owen, Antonio Valencia and Gabriel Obertan.
“Since I came into the team the likes of Bryan Robson, Mark Hughes, Eric Cantona, Ruud van Nistelrooy, Roy Keane and David Beckham have left the club,” he said.
“But that is what the manager is so good at – reshaping and re-energising the team.
“Carlos and Cristiano were great players but we move on. As players it’s like ships in the night. You just get on with it.”