Robert Pires is in Arsenal's squad tonight for the first time since suffering a serious right knee ligament injury seven months ago.
Wenger's team play Auxerre to try and guarantee a place in the second group stage of the Champions League. A draw will put Arsenal through if PSV do not win in Dortmund.
"He [Pires] brings vision," Wenger said. "He has a great work-rate and special passing. We feel more fluent when he is on the pitch.
"He brings that kind of oil in the engine that makes it happen. And he is generous. He likes to give people around him a good ball".
Pires appeared last week in a specially arranged friendly against Queens Park Rangers, scoring one goal and setting up another in a 5-1 win.
Pires said: "Other players got injured like me and managed to be back on top. I am thinking about players like Ruud van Nistelrooy for example. And when I see what he's done, I think, why not me?
"I am ready to play, I have been ready for a few days already and the manager knows it. Of course, I am going to need some time to get back to my top level. I will certainly be scared to suffer a relapse".
Guardian Service
Arsenal (4-4-2, probable):Seaman; Lauren, Campbell, Cygan, Cole; Wiltord, Gilberto Silva, Vieira, Ljungberg; Kanu, Henry.
Auxerre (4-4-2, probable):Cool; Radet, Boumsong, Mexes, Jaures; Lachuer, Tainio, Faye, Fadiga; Kapo, Benjani.