Bayern Munich legend Steffen Effenberg has told Toni Kroos to think carefully before opting to leave the club this summer.
As reported by Goal.com, Effenberg has insisted that the German international is a key member of the Bayern side and remains crucial for the new philosophy at the club.
The central-midfielder has been heavily linked with a move to Premier League outfit Manchester United in recent months, with the Red Devils reportedly ready to make a £40 million move for the player's services.
Manchester United are looking to rebuild after a disastrous season, which has seen them slump to seventh place in England's elite division, however the ex-Bayern man has insisted that Kroos should remain at the club.
Speaking to Goal, the ex-Bayern man said: "Put it this way: If you have the opportunity to form a successful era at Bayern, you should think two or three times about what step to make.
"Every player feels enormously well in Munich and at the end of the season, there are titles. Kroos is a key figure, a transfer shouldn't be an issue.
"He is an important and crucial player - for the system and the new philosophy."
It remains to be seen as to whether Manchester United will step up their interest in the highly rated German star in the near future, but the club will currently be concentrating on hiring a new manager.
Despite David Moyes' dismissal as boss of Manchester United, it still appears that Kroos is high on the priority list for the Red Devils this summer.
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