Bayern Munich's David Alaba doubtful for Tuesday's match vs. Olympiacos

Bayern Munich defender David Alaba is listed as doubtful for Tuesday's Champions League match against Olympiacos after picking up an ankle injury in Saturday's 3-1 win at Schalke.

"Whether Alaba can play against the Greek champions depends on the healing process in the next days," read a statement on the club's official website.

The 23-year-old scored in Saturday's victory, which lifted the Bavarians eight points clear of Borussia Dortmund atop the Bundesliga, but came off in the 83rd minute.

His absence could affect Pep Guardiola's preparation for the last of the group stage fixtures at Allianz Arena. Both Bayern and Olympiacos, each on nine points in Group F, could advance to the knockout round with a draw on Tuesday.