The Mirror says Xhaka had a good game for the Gunners, but it was his actions following the final whistle that caught the eye.
The details of the conversation are not known, but Xhaka was seen pulling Kolasinac and goalkeeper Emiliano Martinez over to one side for a chat.
It seems he wanted to get the bottom of the confusion that led to the goal to ensure something similar doesn't happen again.
Photographers snapped both players explaining their side of the story before the trio made their way back to the changing room.
Context:— Mr Successful (@MrPresident_Ryz) June 28, 2020
After the final whistle, Xhaka pull Kolasinac to the side and laid into him for making mistakes leading to the goal
Kolasinac said there wasnt anything he could do, Xhaka calls over the Keeper to support his case and laid INTO Kol some more
FINALLY some accountability pic.twitter.com/8saygSWHS4