Toni Kroos, reportedly a Manchester United target, has been warned by Franz Beckenbauer, the Bayern Munich honorary president, that his new contract demands are "going through the roof". With David Moyes having scouted the midfielder in January the impasse between Kroos and the European champions will offer further encouragement to United's manager that he could sign the 24-year-old in the summer.

Beckenbauer said: "You have to make a decision as a club when someone's demands are going through the roof. There is not a single player who's worth changing your entire wage structure for. Nobody's indispensable. If the player wants to stay at Bayern, I can only advise him not to overplay his hand."

With Kroos's current deal ending in June 2015 Matthias Sammer, Bayern's sporting director, insists he will not leave before then. "Toni has a contract until the summer of 2015 and he will not be going anywhere before. And we are determined to make sure he will stay at Bayern beyond the expiry date of his deal. We really value Toni and have shown so more than once."

Yet should negotiations drag on the prospect of losing Kroos on a free transfer in summer 2015 would strengthen Moyes's hand should he decided to make a bid for a player who would cost around £25m.