Arsenal boss Arsene Wenger admits he doesn't know what he'll do with his goalkeeper selection.
Vito Mannone featured in their draw at Champions League opponents Schalke, but Wojciech Szczesny is now fit.
Wenger said: "We'll see. I don't look too much for coming problems. In my job you don't miss problems. You miss more solutions, that at the moment is not a big problem. Mannone had a good game, he had a good game in Manchester for me as well. It is good, very interesting. His confidence gets better in every game."