There are arguments both ways as to whether Bellerin was fouled, however one thing is

[redgunamo]

I would suggest that if you knock someone unconcious, by default that's dangerous play and therefore a foul and a card

I would want my player to score the goal and knock the defender out, if necessary, and then let the officials disallow it, if they dare. It's certainly worth a try, if you're playing at home.

There's the thing; they have simply been much more cynical than us for years, basically since Abramovich arrived there.