Pierre-Emerick Aubameyang has pulled out of the Gabon squad with a sprained ankle - making him a doubt for the Gunners' clash with Manchester City.
Aubameyang, 31, sustained a sprained ankle during Sunday's 2-1 Premier League victory against Sheffield United.
Despite being called up by his country to face Benin in an international friendly, Aubameyang has pulled out of the squad for his country's friendly against Benin on Sunday.
Gabon boss Patrice Neveu was aware Aubameyang was carrying a knock from the win against the Blades.
He told RFI: "Aubameyang suffers from a small sprained ankle, contracted on Sunday, during the Premier League match against Sheffield.
"The Arsenal doctor sent me a certificate indicating his unavailability. He is in care for a week."
Aubameyang, who scored 23 league goals last season, has started all four of Arsenal's top-flight games in the current campaign, scoring once and registering an assist.
