Arsenal striker Alexandre Lacazette has been ruled out until October with a left ankle injury, the club said on Friday.
The France international has been hampered by the problem for the past few weeks and the decision has been taken to sideline him.
"After assessments to an ongoing ankle issue, we have advised that Alex will need to rest and strengthen his ankle to regain full fitness," Arsenal said on their website.
"Alex has been playing through this injury for several weeks. He is likely to be back in action in October."
Lacazette has scored two goals in three Premier League games this season.
He'll miss September league games against Watford, Aston Villa and Manchester United, as well as the Europa League opener at Eintracht Frankfurt and a League Cup match with Nottingham Forest.
Australian Associated Press