Sanchez and Jesse Lingard scored two goals in quick succession to hand United a 2-0 lead but Pierre Emerick Aubameyang pulled one back for the Gunners right before the second half.
And with the match perfectly balanced a lot of tempers flared during the second 45 minutes.
The biggest one was undoubtedly between Sead Kolasinac and Marcus Rashford who seems to go head-on-head during a challenge and what followed was utter chaos.
Somehow Granit Xhaka and Jesse Lingard got involved amongst all this and within a few seconds, a host of players were trying to either escalate or solve the matter.
And amongst all this, one Arsenal fan decided to throw a coin at some of the Man United players and it was Ashley Young who saw it and decided to bring in into the officials’ notice.
Ashley Young might have chosen to show maturity at that moment but the Man United captain for the night was surely not holding back off it.
After the match, Ashley Young posted an image on social media clearly mocking the Arsenal fans and the Man United fans are just loving it.
Head’s we win , Tails you loose 🤘🏾 pic.twitter.com/igwUZK2uVO
— Ashley Young (@youngy18) January 25, 2019
This is not the first incident of fans making unruly behaviour cause in the past few months all of the big London clubs have been involved in some kind of fan-related controversy.