Olympiacos fullback Raul Bravo admits he doesn't know what sort of reception he'll receive from his old Real Madrid fans.

The Greek giants face Real in Madrid this week in their Champions League clash and Raul Bravo said: "I don't have anything to prove.

"I'll always be grateful to Real because that's where I have learned my football, won many trophies and I'm the player I am thanks to them.

"The Bernabeu is one of the best stadiums in the world and I want to play well. I am not going to think about whether the fans are going to whistle or applaud me. I was not a star and I do not think that fans will give me a standing ovation!

"I believe that my return is going to quiet."