Manchester United boss Sir Alex Ferguson admits he'd love to bring Real Madrid star Cristiano Ronaldo back to Old Trafford. Ferguson would relish the ­prospect of a 'Second Coming' at Old Trafford for a player he rates as highly as any in the illustrious history of the club.

Asked if the ­United door would always be open to Ronaldo, Ferguson said: "I'd like to think it would be, but I don't think it will happen.

"You're talking about incredible amounts of money now.

"What would you think his value would be? He's definitely unbuyable. Who could afford to buy him? There's talk of the ­Russians, perhaps. But do you think he would go to Russia?

"He complained about the weather here, let alone the ­middle of winter in ­Russia!

"He was ­definitely good value for ­Madrid, but he ­always wanted to play for them. It was his boyhood dream. I'm not saying he'll stay there forever, you never know... How do you know we've not got a buy-back clause for him?"