It's not a great reaction from Jack, but that City player is a right fudgeing cod. It's a reserves match where the game is gone at 4-1 and he's gone in late like that on a player who is trying to get back to full fitness after the latest in a long line of injuries. Not to mention the way he goes down from the softest of shoves. Absolutely pathetic from the City player.
He targeted a player he knew he would get a reaction from and got it. There isn't a single professional player who wouldn't do the same.