Arsenal are facing a fitness scare ahead of their critical Premier League game against Watford.
Granit Xhaka and Lucas Torreira are doubts for the Gunners as they look to bounce back after a 2-2 draw with Tottenham before the international break.
Both left international games with Switzerland and Uruguay respectively, as they suffered knocks.
It is unclear if they will be ready in time.
Xhaka has an Achilles issue, while Torreira had an unknown injury that caused him to come off right before half time in his side's clash against Costa Rica.
