Laurent Koscielny was taken to a hospital with a suspicion of broken jaw to add to the Arsenal crisis.
The defender landed uncomfortably and seemed to be kicking accidentally in the head by Manchester United striker Rommel Lukaku during the match between the FA Cup fourth round between the two teams.
After a long delay when Koselli was healing on the field – which contributed to 10 minutes of added time, the Arsenal captain was eventually replaced and appeared in great pain.
Unai Emery, who also lost Sokratis to ankle injury, apparently turned, and later confirmed that Koscielny was taken to hospital.
"I hope they are not two major injuries," he said. "Sokratis hurt his ankle, I hope it's not too much, Koscielny is different, maybe it was a break, and I hope he will not, but he goes to the hospital and we'll wait." Tailored to know where she was afraid, Cosieli paused. "He goes to the hospital for analysis," he added, "maybe there's a break, I hope it's gone."