Arsenal drew 2-2 with Boca.
Wenger said: "Nasri needs to be committed as well.
"On the sporting side, he is an important player. We have to deal with the situation one way or another. In the next 10 days we have to be clear on that front."
Wenger insists that the Gunners are far from a club 'in crisis', adding: "Let's be relaxed. If you want to start a crisis before the start of the season I can understand that, but I don't see the need."