Cristiano Ronaldo would like to leave Real Madrid and return to Manchester United, according to those close to him.

Ronaldo feels betrayed by unfulfilled promises by Florentino Perez to renew his deal with Real Madrid.

"Cristiano is in the doldrums as he feels that he has been tricked,” according to sources close to him.

Ronaldo's current deal expires in 2021 and was told by Perez after last season's Champions League that he would sign an improved contract.

Ronaldo is the fifth best paid play in the world with an annual salary of €21 million.