Arsenal could face Watford without two midfielders who started the 2-2 draw with Tottenham after both limped off in international matches over the weekend.
Both Granit Xhaka and Lucas Torreira left the action early for Switzerland and Uruguay respectively, with Gunners boss Unai Emery now sweating on their availability for Sunday’s trip to face the Hornets in Quique Sanchez Flores’ first match since returning to the Hertfordshire hot seat.
Xhaka limped off in the latter stages of Switzerland’s 4-0 Euro 2020 qualifying victory over Gibraltar on Sunday night with an Achilles problem, with the Swiss team’s official Twitter account posting footage of his exit.
The midfielder, who is also the Swiss captain, later confirmed that the issue was one he has been suffering from for a number of weeks, but played down the significance of it.
“I’ve been suffering from Achilles tendon pain for a few weeks now. I felt it during the game,” he told reporters, via Metro.
“It hurts now, but it should be okay otherwise.”
Fellow midfielder Torreira was taken off shortly before half-time in Uruguay’s 2-1 friendly victory over Costa Rica in San Jose on Saturday night.
Uruguay media reports that the former Sampdoria man asked to be removed from the game shortly before the break when he was replaced by Cagliari midfielder Nahitan Nandez.
Should both players miss out then Emery could be left short of options in midfield for the trip to Watford, with youngster Joe Willock also a doubt with a calf problem.
The Gunners boss is still without summer signing Kieran Tierney and long-term absentee Hector Bellerin, with the pair likely to eventually become his first-choice full-backs this season.