The Spanish giants have consistently voiced their interest in the 23-year-old and reports have suggested they would be prepared to part with around £100million.

Ahead of next Wednesday's meeting with Chelsea in Moscow, Ronaldo told Spanish TV network Antena 3: "I am happy here but let's see what happens after the Champions League final."

He added: "I am feeling calm here. I'm happy but in the future I don't know. I know Real Madrid like how I play and I know that other teams in Spain like my game as well, so that's good.

"It is good to know that other clubs are interested in you. I have said millions of times that I would love to play in Spain."

The Portuguese winger has become one of the hottest properties in world football after scoring 41 goals this season to help United retain their Barclays Premier League title and reach the Champions League showpiece.