Ribery’s contract with the Bavarian side expire in June 2011.
Barcelona, Real Madrid and Chelsea are among the clubs who reportedly are keen on signing the 27-year-old this summer.
“There is always a limit. A fee of €50 or €60 million would be important for the club. Ribery or €60 million to invest? That money would do well to strengthen the team with two or three signings, a right winger and a central midfielder,” Kahn is quoted as saying by AS.
“To pay €100 million for a player today is a fantasy. I cannot imagine anyone who can pay much more than €50 million for Ribery.”