Robin van Persie limped out of the game, whilst Cesc Fabregas and Theo Walcott are also doubts for the Champions League game with Barcelona.
Wenger said: “We play so many games and we can’t go on losing players. We lost Cesc Fabregas in the week and now Van Persie is not in good shape after this game. It’s a knee problem – we will have to assess it on Monday.”