Jens Lehmann may have played his last game for Arsenal.
Lehmann was between the posts for Arsenal's defeat at Manchester United last weekend - his first start since mid-February.
Wenger said: "Maybe Manuel Almunia will be available, I don't know.
"I will make a decision on Friday morning. He got injured in training on the Friday before Manchester. We sent him for a scan and there was an inflammation so he could not play."