Bukayo Saka was seen leaving Selhurst Park on crutches with Arsenal boss Mikel Arteta admitting to being 'pretty worried' after the star was forced off in the first half against Crystal Palace with a hamstring injury.
Saka lasted just 25 minutes of Arsenal's clash against Crystal Palace before being forced off with an injury.
After a frantic start to the match which saw the Gunners race into a 2-1 lead, the winger fell to the ground and clutched his right hamstring before being substituted.
The England international - who has provided five goals and 10 assists in the league - was swiftly replaced by Belgian teammate Leandro Trossard.