Arsenal have been handed a major blow ahead of Sunday's clash against Manchester City with Bukayo Saka going off injured at Lens.
Mikel Arteta's decision to start the winger in France has ultimately backfired, with the Spaniard to now sweat over the severity of Saka's knock.
Saka hobbled off in their last outing, a 4-0 win against Bournemouth on Saturday and Gunners fans had hoped that the 22-year-old would be rested for Tuesday night's Group B clash.
But Arteta included him in his starting XI, however, he lasted just 34 minutes as he limped off the Stade Bollaert-Delelis pitch.
The England international appeared to hold his thigh, as he hit the deck, before being treated by club medics.
And after being unable to continue, he was replaced by Fabio Vieira as he immediately headed down the tunnel.
More will follow. For the latest on this and other breaking news stories, listen to talkSPORT
Keep up-to-date with all the latest Arsenal fixtures and results and live Premier League standings in our new match centre.Read on talksport.com