Seriously!
He's not coming so all rather irrelevant but he'd tear most, if not all, English teams apart playing for us. And, refs would not get away with letting teams kick him out of games; in fact, I'd venture to suggest that he would quickly become the most protected player in the league in that regard as he would be the biggest attraction ever to feature and, if you are into conspiracy theories, the referees' paymasters would want him on display every week.
Possibly but we are treated differently and there are some big anti City players amongst the powers that be, they would love nothing more than us..... and Messi if he comes, to fall flat on our faces.