If the Arsenal captain has suffered a Grade 2 injury, he may face a few weeks on the sidelines, potentially ruling him out of seven Arsenal games before the November international break.
Fulham (Oct 18), Atletico Madrid (Oct 21), Crystal Palace (Oct 26), Brighton & Hove Albion (Oct 29), Burnley (Nov 1), Slavia Prague (Nov 4) and Sunderland (Nov 8) could all come too soon for the former Real Madrid wonderkid.