It happened during the celebration, it's a shame for us, said Bayern Munich coach Vincent Kompany after the 3-0 win in the first match of the round of 16.
It was after Jamal Musiala's 2-0 goal in the 54th minute on Wednesday evening that Neuer injured himself. He was seen limping around and was substituted four minutes later for reserve goalkeeper Jonas Urbig.
According to a statement from the German giant club, Neuer is not available for play for the time being.
The 38-year-old veteran goalkeeper recently extended his contract until 2025, but he ended his career in the German national team in August last year.