Arsenal could be without Rob Holding for three to four weeks with a hamstring injury.
The injury forced Holding to withdraw from Saturday's loss to Manchester City.
He underwent a scan on Monday to assess the severity of the injury.
And theDaily Mail says the 25-year-old will miss the Gunners next six fixtures leading into the international break.
The Englishman has started in all but one of Arsenal's eight games so far this campaign.