Mourinho has launched a furious tirade at Cristiano Ronaldo

Ronaldo, 22, had claimed that Mourinho "does not know how to admit his own failures" after the Blues boss's controversial comments on penalties.

But Mourinho hit back: "If Ronaldo says it is a lie penalties were not given against United, then he is lying.



"He needs to see he cannot fight with facts. If he is a liar, he will never reach the level he wants to reach."

Last weekend Mourinho insisted that there was a new rule in football, where United could not concede a penalty and Chelsea could not win one.

He was referring to spot-kicks both Sheffield United and Middlesbrough felt they should have been given at Old Trafford and a penalty he thought Chelsea should have had at Newcastle.

"The whole world knows how he is," Ronaldo was reported to have told Portuguese television.

"Mourinho always has to say something when he is not happy."

United are three points ahead of Chelsea in the Premiership with four games left, with the two sides meeting at Stamford Bridge on 9 May.

They will also face each other in the FA Cup final and both clubs are in the semi-finals of the Champions League.