Arsenal would be without six players for their clash with Chelsea on Wednesday.
Wenger said: “At the moment out injury list is quite long because we lost Kolasinac, we lost Koscielny and we had already Monreal, Giroud, Ramsey and Ozil out.
“The two who have a little chance (for Chelsea) are Ozil. He might have a test this morning but he hasn’t been out at all since Crystal Palace.
“And Koscielny, but yesterday the medical department were pessimistic on Koscielny.
“Kolasinac is out completely for at least two weeks. Koscielny is 30 per cent available, 70 per cent not.”