However, the Gunners boss said that his compatriot may be fit for the trip to
Old Trafford in eight days' time.
"[Mathieu] Flamini could be available for Manchester United," he told reporters.
"The mood is very positive at the moment, our priorities are the league and the Champions League.
"I have complete confidence that we will deal well with this period [of back-to-back home defeats], the players will be up for it. I learnt a lot about my team during the spring, I know how much we want it."
The Gunners are currently top of the Premier League.