The Bayern goalkeeper sustained a foot injury in a defeat to Real Madrid in the Champions League.
Manuel Neuer could be set to miss the remainder of the season after fracturing his foot in Bayern Munich's Champions League loss to Real Madrid.
The Germany international goalkeeper sustained the injury as Cristiano Ronaldo completed his hat-trick in extra time during Tuesday's 4-2 defeat to Madrid in the return leg of their quarter-final tie, which eliminated Bayern 6-3 on aggregate.
Bayern announced the initial diagnosis and said 31-year-old Neuer will "undergo a thorough examination on arrival in Munich prior to a decision on the appropriate treatment".