Alex Oxlade-Chamberlain won't return to training until next month and will not be available for selection until 2014, reports the Sunday People.
The Arsenal winger was injured on the opening day of the season as Arsenal succumbed to a 3-1 loss at the hands of Aston Villa at the Emirates.
Originally, Arsene Wenger predicted Oxlade-Chamberlain would be back in November but the 20-year-old is yet to return to training for the Gunners.
It is believed that Oxlade-Chamberlain has been told that he won't be able to train until mid-December meaning his first team return is unlikely to come before the turn of the new year.
The news comes at a bad time for Arsenal, who are looking to recover from a 1-0 loss to Manchester United suffered last Sunday.
Arsenal are still top of the Premier League table but injuries to Oxlade-Chamberlain, Lukas Podolski and Theo Walcott have left a distinct lack of width in the Gunners ranks.
It is also bad news for the player himself, who now faces a battle to win a place in the England squad for next summer's World Cup.
Oxlade-Chamberlain seemed to have won his place in the side after scoring a sensational goal in the 2-2 draw against Brazil in the summer, but the emerging talent of Andros Townsend has increased competition.
He also faces a fight to get back in to the Arsenal line up, which has seen the arrival of Mesut Ozil since his last appearance.