Arsene Wenger, speaking ahead of Arsenal's Week 7 match with Burnley, ruled out his France international forward due to the continuing effects of a toe injury.
The Theo Walcott redemption tour continued with a first half brace against Basel in the Champions League group stage.
Arsene Wenger has indicated that Aaron Ramsey will definitely miss out on matches with Burnley and Basel before the international break.
Arsenal came out on the positive side of injury news after Arsene Wenger revealed Francis Coquelin will only miss three weeks.
Francis Coquelin looks set to spend to a number of weeks on the sidelines after injuring his knee during a dominant Arsenal display against Chelsea at the Emirates.
Alexis Sanchez scored a goal and recorded an assist as Arsenal disposed of Chelsea at the Emirates, 3-0.
Arsene Wenger could have Olivier Giroud available again after the forward missed Arsenal's previous two matches with a toe injury.
After initially being ruled out for approximately a month, Arsene Wenger has indicated that Aaron Ramsey could miss an additional three weeks.
Arsenal were one of the few Premier League teams to draw lower level opposition in the next round of the EFL Cup with Reading their next opponent at the Emirates in late October.
Gabriel partnered Rob Holding in Arsenal's 4-0 win over Nottingham Forest marking his return to the starting line-up.
Lucas scored a brace and assisted on another as Arsenal rolled over Nottingham Forest in EFL Cup action on Tuesday.
Alexis had an active day with two goals and a missed penalty as Arsenal cruised past Hull City 4-1.
Petr Cech was left out of Arsenal's starting eleven against PSG but will return for the Premier League Week 5 clash with Hull City.
The young attacking midfielder's spot is uncertain based on the health of Olivier Giroud and Theo Walcott coming off of Arsenal's Tuesday draw with PSG in Paris.