Arsenal boss Arsene Wenger has revealed that goalkeeper David Ospina will not feature against Bayern Munich after suffering a shoulder injury during the international break.
The 27-year-old started both Champions League games this season but is ruled out of Tuesday's key game against the German Champions.
Defender Gabriel Paulista is in the squad with midfielders Mesut Ozil and Alexis Sanchez both expected to start.
"We have Gabriel [Paulista] back available, he is the only player back available," Wenger revealed.
"Everybody has recovered from our game on Saturday so it is nearly the same squad.
"[David] Ospina is out injured. He came back from Colombia with a shoulder problem and he is out.
"[Resting Ozil and Sanchez?] No.
"You would be surprised if I told you that I would rest them tomorrow, so I can tell you certainly not. Normally they should play tomorrow."