And after the game Mustafi wished his team-mate a quick recovery on Twitter.
“We had to fight hard, but we worked this out together,” Mustafi tweeted.
“Get well soon, my brother.”
After the game Arteta revealed that Kolasinac’s injury looked bad and the player will get it assessed today.
“Well, I’m never happy when something happens like that. With Kola he’s been very unlucky with injuries,” Arteta said.
“I don’t know, it looked bad.
“He was in a lot of pain so we will assess him [on Monday] and see how he is.”
source: express.co.uk