Arsenal secured a 3-0 victory over Bournemouth on Saturday at Vitality Stadium to return to winning ways after their 2-2 draw against Tottenham Hotspur last time out in the league.
The win saw them move to the top of the Premier League table after Manchester City lost 2-1 to Wolverhampton Wanderers, but the Gunners suffered an injury scare as Bukayo Saka was withdrawn during the closing stages of the game.
The Arsenal forward limped off against Spurs last weekend and was unavailable for selection for the Carabao Cup game against Brentford during the week.
Saka missed some training sessions but was eventually passed fit to face Bournemouth.
However, it appears the decision has backfired as he was seen limping against the Cherries before he was taken off.