INJURIES GALORE:
Borussia Dortmund's injury list is long. Attacking midfielder Marco Reus was ruled out for four weeks with a left ankle injury sustained on duty for Germany, and Jakub Blaszczykowski had a setback to his return from a cruciate knee injury with a muscle injury in training.
Midfielders Ilkay Gundogan and Nuri Sahin are also out, as is defender Oliver Kirch with a thigh injury. Hummels was only expected to return to training on Wednesday.
"My issue is not who can play how well with whom, or how good can someone be, but who can (play) at all," Klopp said. New signing Ciro Immobile recovered from the knock he picked up playing for Italy to make a substitute appearance against Freiburg.
Also, Arsenal defender Mathieu Debuchy has a serious-looking ankle injury from the side's 2-2 draw with Manchester City in the Premier League on Saturday. Debuchy is reportedly facing two months out but would have been suspended for Tuesday anyway following his red card in the playoff against Besiktas.
Midfielders Mesut Ozil and Aaron Ramsey both shook off ankle problems to play against City.
