Jurrien Timber was forced off 50 minutes into his Premier League debut for Arsenal, after pulling up off the ball with an issue in his right leg.
The Dutch defender joined the Gunners this summer from Ajax, but had to be taken off during the home match against Nottingham Forest, when he was replaced by Takehiro Tomiyasu.
Arsenal were leading the game 2-0 at the time, with first-half goals from Eddie Nketiah and Bukayo Saka putting the hosts in charge at the Emirates after kick-off was delayed by 30 minutes due to turnstile issues.