Arsenal boss Arsene Wenger admits he has defensive concerns with Philippe Senderos getting injured in last night's 1-1 Carling Cup semi draw against Tottenham.

He said: "Djourou is a problem we had already at Birmingham so that means for me it came back, a groin problem, you know? Senderos, a little mid-knee ligament he got in the first half, so we'll see. We have to assess all that, I cannot tell you how long they will be out, it can be one, two days, it can be two weeks! It's difficult to assess tonight. Hoyte, Gilberto, Sagna can play in there, we still have solutions."

Wenger admitted: "Djourou was injured, Senderos is injured, Van Persie got injured. So, we had no injuries before the game started but tonight considering that we lost three players, and we lost three players in the African Nations Cup, we lost suddenly in one night six players... basically in two days - that is very difficult for us."