Arsenal manager Arsene Wenger has suggested that midfielder Granit Xhaka may miss his side's Premier League clash with Southampton on Wednesday night.
On Sunday, Xhaka netted Arsenal's first goal during the 2-0 victory over Manchester United, despite it initially being claimed that he would miss the game with an ankle injury.
However, despite appearing to shake off the knock that he sustained against Tottenham Hotspur a week earlier, Wenger has revealed that he has received another blow to the area.
The Frenchman is quoted by the London Evening Standard: "He got injured last time and he got a recurrence of that. We'll see. I don't know."
Since signing from Borussia Monchengladbach last May, the Swiss international has featured in 28 of Arsenal's 34 fixtures in the Premier League this season.
The Gunners face a period of four games in 12 days to complete their schedule in England's top flight.