The former United defender believes Rooney deserves to be regarded as one of the club's greatest.
"He's a United great and his record says that, 200 goals is great. He is only 40-odd short of Bobby Charlton and Denis Law, so he has to be talked about like that," the 57-year-old told the Telegraph.
"He has had his ups and downs with the supporters but when it comes to matters on the football pitch, he gives 100 per cent and I am personally pleased he is back on board.
"Some supporters will remember the events of the summer but a lot of them will think of him for what he does on the football field and the great goals he has scored over the years.
"There will be a minority who perhaps won't look upon him fondly, but I think the majority will still love him.
"We don't know whether he really wanted to leave or not, David Moyes came out from the word go and said, 'Wayne Rooney is not leaving the football club', and that turned out to be the case.
"He had to knuckle down and that's what he did. He got back in the team, he is scoring goals and looking like his old self when he first arrived. He looks back to his best."