The England midfielder finally returned to full training after an ankle injury sidelined him for the whole of last season, also ruling him out of contention for
Wenger, though, will take no chances with the 20-year-old, who is likely to have a few reserve outings before being considered for the first XI.
Speaking ahead of Sunday's (1.00am Monday AEST) trip to Manchester City, Wenger said: "We will see how he responds to the training now.
"We will have to be a bit patient, a bit cautious, because when a guy has been out for 14 months it takes a while to get back to match fitness.
"Jack is fit to practise and play, but to put high-level performances in takes time.
"He will need a few games in the reserves."
Wenger feels the Gunners can head to the
"I expect them to be focused and play well, but it was a disappointment for them of course. It always takes a little bit away from you," he said.
"But on our side, let's not have any speculation of the weakness or strength of them, let's focus on us to be at our best.
"If we are at our best I think we have a great chance to get a good result there."
Manager Arsene Wenger believes whatever transpires on the final day of the 2012/2013 English Premier League season, the mental strength of his players cannot be questioned.