Manchester United boss Sir Alex Ferguson has moved to shutdown talk of re-signing Real Madrid star Cristiano Ronaldo.

United face the Real Madrid superstar on Wednesday, four years after flogging him for £80million.

Boss Fergie said: "If you were to buy him back, you are talking hundreds of millions.

"That rules everyone out, including Barcelona. I just can't see it happening."

Ronaldo, 28, who moved to the Bernabeu in 2009, has been heavily linked with a switch back to Old Trafford.

But boss Ferguson declared: "Everyone talks about that but I don't see it. Cristiano has 2½ years on his contract and I think Madrid are trying hard to get him a new contract."