It's a massive decision and it's the right decision. Mason Mount has got the right side of him.
It's a wonderful ball by Reece James and Fikayo Tomori is not attempting to play the ball.
It's just a straight pull on the shoulder and it's a clear penalty. It's a huge moment in this game and in this group.
The referee is losing all control here, booking Mason Mount and an AC Milan player before the penalty is being allowed to be taken.
Fikayo Tomori is off!!
The former Chelsea defender is chasing back on Mason Mount, he lays a hand on the shoulder of the Chelsea midfielder, putting him off balance but still getting the shot away.