Marco Reus got injured in Dortmund's game with Wolfsburg. The striker managed to leave the pitch under his own power with an ankle ligament problem.
Therefore, Reus will not start the big match with Bayern this Saturday which will be watched in many parts of the world.
That said, despite his fitness porblems, 'Bild' says Reus could be on the bench in case he is needed later on.
At 30, the attacker is a major player for Dortmund. In his eighth season at the German club, he has made 254 appearances and scored 124 times.