Manchester United striker Cristiano Ronaldo and Aston Villa defender Tyrone Mings had to be separated by their teammates during the Reds' defeat at Villa Park on Sunday.
United started the match sluggishly and were two goals behind inside 11 minutes. Leon Bailey fired home the opener in the seventh minute before Lucas Digne curled home a free kick moments later to ensure a nightmare start for Erik ten Hag's team.
The Reds regrouped as the half wore on and they grabbed themselves a lifeline just before the break. Luke Shaw's long-range strike deflected off Jacob Ramsey to leave the match finely poised at 2-1.