Honest question but what would this look like?
Rashford has been shit, garnacho has been shit. Antony has worked hard but not done much, pellistri has not looked good in his limited minutes. Bruno is out of form for United, Mount has been alright, McTominay has scored a few goals but does nothing outside of that. Eriksen has had a few good cameos but we all know he isn't physically able to play from the start vs City. Amrabat was just subbed at half, casemiro probably won't be ready to start but even so, has been out of form. Mainoo just returning from injury might make the bench and will need to actually integrate to the first team before he's a real option in games like this.
Our back 4 is "whoever is fit". In fact our only 2 in form players in our squad are probably Dalot and Maguire. Reguilon is hopefully fit, and then I have low confidence in whoever is Maguire's partner (and low confidence in Maguire vs City). Hojlund is playing well too, without scoring much, but he's an automatic choice.
I get the whole "play in form players", but that doesn't exist for us.