United boss Sir Alex Ferguson revealed on Tuesday that Roonoey had rejected a new deal and wanted to leave the club.
But Fergie insists he never wanted to lose the 24-year-old hitman and the striker has now signed a new contract that will keep him at the club until the summer of 2015.
Ferguson told United’s official website: “It’s been a difficult week, but the intensity of the coverage is what we expect at Manchester United.
“I said to the boy that the door is always open and I’m delighted Wayne has agreed to stay.
“Sometimes, when you’re in a club, it can be hard to realise just how big it is and it takes something like the events of the last few days to make you understand. I think Wayne now understands what a great club Manchester United is.
“I’m pleased he has accepted the challenge to guide the younger players and establish himself as one of United’s great players. It shows character and belief in what we stand for.
“I’m sure everyone involved with the Club will now get behind Wayne and show him the support he needs to produce the performances we know he is capable of.”