Toni Kroos
Kroos is replaceable, warns Bayern legend.Reuters

Franz Beckenbauer has warned Toni Kroos that Bayern Munich will not tolerate his behaviour should he continue to hold the club to ransom over a new contract amid Manchester United interest.

The Germany international has already turned down one offer of a new contract from the Bundesliga champions and a growing number of reports suggest United are willing to offer the midfielder £250,000 a week should he be interested in a move to Old Trafford.

Kroos' refusal to sign a new deal has already irked senior figures at the club and honorary president Beckenbauer has hinted Bayern may have to come to a decision that could see them end his stay at the Allianz Arena should he persist with unreasonable demands.

"He shouldn't raise the stakes too high," Beckenbauer told Sky Germany.

"Bayern will make an effort to keep him, but when the demands are too high, a decision will be made.

"There is no player who you have to give everything to keep. Everyone is replaceable."

Bayern and Kroos have been locked in this contract impasse throughout the early months of 2014 and should an agreement not be reached by the summer his future at the club will come under severe scrutiny, with his current deal set to expire in 2015.

Suggestions of discontent were intensified when manager Pep Guardiola opted to remove Kroos from the first team in recent weeks. The 24-year-old was taken off during a win over Stuttgart last month before being left on the bench for subsequent wins over Frankfurt and Nurnberg.

Kroos returned to the starting XI during his side's cup thrashing of Hamburg and provided a telling reminder of his ability after a virtuoso performance in his side's 2-0 win over Arsenal in the first leg of their Champions League clash.

The midfielder, who has spent his entire career at Bayern apart from one loan spell at Bayer Leverkusen in the 2009/10 season, has insisted he is happy at the club for now, but Bayern's reluctance to make him one of the club's best paid players ensures his future remains uncertain.