Wenger's midfield failed to fashion any chances in successive defeats by Norwich and Schalke.
And the Emirates boss said: "I am considering that he wants to play, it is an important game.
"But we want players to be ready physically and he has not played for 14 months. So it is important.
"Ideally, it was planned for him to play next week in the Capital One Cup at Reading. Physically he is at 80 to 85 per cent.
"You have to consider first he has no setback and that you don't put players in situations, where they are tired and don't have coordination, and they pick up an injury.
"If you look at a more selfish view you can say a guy can play an hour. But during this hour it is important he is fit to play."