He doesn't deserve to go straight into the team. We can't play hardball with him and then put him back in, at the expense of someone who's just performed exceptionally well while he's been out. What kind of a message does that send out? What if he starts and he under-performs and we get beat? Does Klopp that attention?
It's better for him too, put him on the bench and then bring him on if needed, and then if he makes a difference he'll go a long way to rebuilding a few bridges. If we play well against City without him, he doesn't even need to come on and we keep the little fucker sweating.