Raul Albiol is urging Real Madrid teammate Cristiano Ronaldo to sign a new contract. Ronaldo is tipped to refuse any new contract offer tabled by Real after growing fed-up with the way he's been treated by the club's hierarchy.

Manchester United, PSG and Manchester City are all monitoring developments closely, with Ronaldo's priority being a return to Old Trafford.

"I don't know if he'll renew his contract or not, but Cristiano Ronaldo is the best in the world," Albiol told reporters at a promotional event in Valencia on Thursday. "And we want him to be with us for as long as possible."