Ramon Calderon has refused a request from Manchester United to publicly declare he would never attempt to sign Cristiano Ronaldo.

The Real Madrid president says that while he has dismissed a formal request from David Gill, Manchester United's managing director, to publicly abandon their pursuit of the player, he claims Real have "no chance" of signing the Portugal forward this summer.

"At the moment it seems impossible for him to come," Calderon said. "We shouldn't talk about Ronaldo any more because at the moment it's impossible. It's an aspiration which has no chance of happening because his club have said they are not selling and we must not talk about it any more."

Calderon added: "The managing director sent me a letter telling me they will never sell him and even asking me to publicly declare that I will never sign him, which is something which doesn't make much sense.

"We have to think that at the moment, whatever Cristiano says, Manchester won't sell him. We don't know if Ronaldo wants to leave or not - that seems to me to be getting ahead of the events."

While Calderon insists the player remains an "impossible" dream for Real, he says he would still love to see the player at the club.

"We would love to have Cristiano or any of the great players here," he added. "The decision will be made by the coaches, but nothing is expensive or cheap on its own, before analysing what the counter-balance is from what you receive for the price you pay.

"Here, €75 million was paid six years ago for a 29-year-old player [Zinedine Zidane] and nobody questioned it. What I have always said is that this club want the money to be on the pitch and not in the bank, and it is public that Madrid has it. They know what we earn, that doesn't mean the club are going to throw it away. We are not going to throw our money around."

The Real president also sought to play down the recent row between the clubs.

"Speaking more about this will only damage the relationship between the clubs," Calderon added. "Occupation of countries and turning Columbus into a Spaniard have already been talked about," he said, in reference to quotes made by United No 2 Carlos Queiroz last week about Real's behaviour, when he accused the Spanish club of trying to 'nationalise' Ronaldo.