Arjen Robben suffered a "minor" calf strain during Bayern Munich's Champions League win over Anderlecht on Wednesday and will miss Saturday's trip to Borussia Monchengladbach.
Bayern flattered to deceive during their 2-1 triumph in Belgium, with Robben forced off just after half-time.
The Dutchman has been a regular this season, playing in 11 of Bayern's 12 Bundesliga matches, but he will be missing for what is sure to be a tricky encounter against the fourth-placed side.
Both Robben and Thiago Alcantara - who Bayern fear suffered a "serious" thigh injury in the same match - have returned to Munich, whereas the rest of the squad travelled straight to Monchengladbach.