Despite their comfortable 2-0 win over Burnley, Arsenal suffered a double injury blow with key midfielders Viktor Gyökeres and Martin Zubimendi both leaving the field nursing muscular concerns.
Gyökeres, who opened the scoring, was withdrawn at half-time, while Zubimendi requested to be substituted late in the game.
These new concerns compound an already significant injury list for Mikel Arteta, which includes long-term absentees like Martin Ødegaard and Kai Havertz.
The club must now hold its breath and await scan results ahead of the midweek Champions League trip to Slavia Prague.