This is not the first time that the referees let our opponents kick us as they want. Just look at the yellow cards they give, if it's a City player, he can do a maximum of two fouls then he gets a yellow card, and our opponents the one who kicks the most is spared like Gallagher when we played against Chelsea.
On Saturday in game Sheffield - Brendford there also should be red for one challenge but VAR didn't think that and it was red all day. Someone will get serious injury because of referees letting that go away insted punishing them.