Arsenal defender Mathieu Debuchy is expected to miss three months after having ankle surgery, BBC Sport reports.
Debuchy was injured on Sept. 13 against Manchester City and left the field on a stretcher.
Manager Arsene Wenger said how much the team misses Debuchy will depend on how his replacement performs.
"How big it will be we will only know afterwards as it will be down to how well we replace him. We bought [Calum] Chambers for that," added Wenger.
Debuchy, 29, left Newcastle United to join Arsenal this past offseason, with Arsenal paying a fee believed to be around £12 million for the right back.
Arsenal is tied for fourth in the Premier League and has a 2-3-0 record. They play North London rivals Tottenham Hotspur on Saturday.
- Paul Palladino