David Alaba is set to miss the start of Bayern Munich's Champions League campaign after tearing a muscle in his left thigh.
The 27-year-old suffered the injury in the warm-up before Bayern's 1-1 draw at RB Leipzig on Saturday.
Jerome Boateng replaced him in the starting XI, with Lucas Hernandez moving to the left side of defence.
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Bayern did not confirm a timeline for Alaba's return but it is believed he will miss several weeks of action, meaning head coach Niko Kovac will now have to weigh up his options for Wednesday's Champions League home clash against Red Star Belgrade.