Bayern Munich supremo Franz Beckenbauer fears losing Franck Ribery at the end of the season to Real Madrid or Manchester United.

He said: "It's a short time until 2011. If we receive a good offer from Real Madrid or Manchester United we would be in a weak position to negotiate, especially if Ribery wants to leave.

"We may still insist that he serves out his contract, but if the offer is good enough, you never know what can happen. It's complicated to deal with the desires of a footballer."