The winger hoped to be back in action by July 1 but now faces several more weeks on the sidelines.
Franck Ribery's injury nightmare is set to continue after Bayern Munich confirmed his ankle has been "immobilised" in a bid to cure the problem.
The winger has been absent since March 11 but hoped to return to action by July 1 after receiving non-surgical therapy on the area, but that treatment has failed to work.
As a result the injured area is likely to be contained within a protective boot or plaster to avoid any further damage and accelerate the healing process.