Cristiano Ronaldo returned to Manchester United on Friday as club manager Alex Ferguson said he wants to extend the Portugal winger's contract and warned Real Madrid to stay away from his players. Ferguson also said that Ronaldo, who played with an ankle injury as United won English and European titles in May, will begin full training in a month following surgery last month. And he will return to action in a United jersey after a pledge of loyalty was extracted by Ferguson, who suggested it was a matter of personal pride not losing his prized asset to the Spanish champion. “I can't deny it was an important issue - there are very few players who left me against my will,” Ferguson said Friday. “(Madrid) now know they are dealing with a different animal and Cristiano will settle down and enjoy his career here. He has got four years left on his contract and at some point hopefully we would like to extend it.”
