Borussia Dortmund captain Marco Reus is in doubt for Tuesday's Champions League fixture against Inter due to an ankle problem.
Reus was forced off after just 28 minutes of Dortmund's 3-0 Bundesliga victory over Wolfsburg.
Dortmund announced on Sunday that the 30-year-old's chances of playing in the match would "be determined after further analysis on his ankle injury".
Reus' replacement, Mario Gotze, scored in Dortmund's victory that was secured by three second-half goals.
Dortmund sit second in the Bundesliga table, three points behind leaders Borussia Monchengladbach.
Inter visit Germany on Tuesday for a crucial Group F encounter, with both sides on four points after Antonio Conte's men beat BVB 2-0 at San Siro on the previous matchday.
With Barcelona already three points clear on top of the group, it could be a battle between Inter and Dortmund for second - a position that would see them reach the last 16.