Arsenal midfielder Jack Wilshere has suffered an injury setback in training.
The midfielder is yet to feature this season after aggravating an ankle problem on international duty in June, and subsequently undergoing surgery later in the year.
Gunners boss Arsene Wenger had hoped to welcome the 20-year-old back into the fold in early February but that date has now been revised while the club wait for the results of a scan.
Wilshere suffered the injury on Wednesday, says the Daily Mail.