Tomas Rosicky is back in full training and could return for Saturday's trip to Old Trafford.
After spending 18 months on the sidelines, the Czech midfielder made his long-awaited return to action during pre-season, playing three games for the Gunners.
But he sustained a hamstring problem before Arsenal's final clash of the summer against Valencia.
Speaking at his pre-match press conference, Arsène Wenger confirmed that although Wednesday night will come too soon for the 28-year-old, he might return on Saturday.
"Tomas Rosicky is back," the manager said. "not for tomorrow, but he was in normal training today.
"He could be in the squad on Saturday if needed."