Manuel Neuer limped out of Bayern Munich's Bundesliga clash with Fortuna Dusseldorf on Sunday.
The Germany international pulled up early in the second half after slipping while attempting to make a pass.
Neuer missed Bayern's DFB-Pokal quarter-final win against Heidenheim on April 3 with a calf injury but was fit enough to feature in his side's 5-0 thumping of title rivals Borussia Dortmund last weekend.
Neuer missed almost the entirety of the 2017-18 season with a broken foot, but has played 37 times in all competitions this season.
First change:
— FC Bayern English (@FCBayernEN) April 14, 2019
@Manuel_Neuer
Sven #Ulreich
Manuel looks to have picked up an injury. Hope it's nothing serious, captain!
(53') #F95FCB 0-2 pic.twitter.com/PKWfQ3WgI2