Although Nasri could return to face Owen Coyle's side, Wenger rued the loss of his pacey winger Theo Walcott.
"Samir could be involved against Bolton," said Wenger. "He has had a very good preparation and joins in training tomorrow. If needed I will integrate him in the squad for Bolton but for sure he will be back for our first Champions League game against Braga."
Turning to Walcott's injury, Wenger added: "The tackle looked quite bad. When you see how it turned his ankle I thought it would be three or four days or it would be four to six weeks. Unfortunately, it will be four to six weeks.
"We had some good news about the scan because at some stage we were scared it could be worse. But overall it is a question of patience and rehabilitation."