Both Cazorla and Mertesacker remain unavailable due to injury, although recent reports suggested the former Germany international is close to a return.
However, Wenger has made it clear the 32-year-old defender still needs some more time, having been out fore the entirety of the season so far.
Man Utd fans claim Griezmann is a done deal
"Mertesacker is not close to a return," Wenger added. "He had a little calf problem.
"He is on the pitch but not close. He is still three or four weeks away, not more."