Real Madrid president Ramon Calderon believes his side's hopes of wresting Cristiano Ronaldo away from Manchester United rest on what the player himself wants.

United have steadfastly insisted Ronaldo is going nowhere, but Calderon feels that the final decision will ultimately come down to the player.

"The players play where they want. If a player decides to leave he is unstoppable, slavery was abolished a long time ago, nobody can prevent a player from moving," Calderon was quoted as telling Punto Radio.

"If the player is firm in his decision there is no one who can hold him back."

The Madrid supremo was speaking following United's penalty shoot-out win over Chelsea to win the Champions League final on Wednesday night.

Calderon described Ronaldo, who netted his 42nd goal of the season to put United ahead against Chelsea, as an "extraordinary player" and insists if the Red Devils want to do business, his club would be very interested.

"I have always said that if Manchester want to sell him, we will ask about him, and if he wants to come and we can pay what they ask," he added.

However, Manchester United assistant manager Carlos Queiroz insists Ronaldo is going nowhere.

"Without doubt he is going to continue in Manchester. He is very happy with us, he has a contract and there is no fear that he will leave," Queiroz, the former Real Madrid coach, said on Canal Plus.

Ronaldo himself was non-committal about his future after Wednesday's European success in Moscow.

The Portuguese international claims he is happy at Old Trafford but he may not have ruled a move out, saying: "I don't promise nothing, I don't promise nothing to my mum, I don't promise nothing to the supporters.

"I want to stay, but the future... no-one knows. I want to stay. We are going to see in the next two weeks, I don't say I make a decision."
Ronaldo is just one year into a five-year contract at United.