Arsenal have confirmed that Alexandre Lacazette has been ruled out until October due to an ankle injury.
Lacazette has hit two Premier League goals this term but will sit out Sunday’s trip to Watford.
He will also be sidelined when Arsenal get their Europa League campaign up and running away to Eintracht Frankfurt next week.
Arsenal indicated Lacazette has been playing through pain in his left ankle but is likely to return next month.
Matches set to be missed by Lacazette include a trip to Manchester United in the Premier League on September 30.