I don't get why people make these bold assertions about how much someone definitively will or won't play. If City are willing to part with that much money for him, of course he'd play.
Just saying stuff like this so confidently is wild to me. Since when has this been City's M.O? Especially under Guardiola. And it's not like they're scared of making Arsenal stronger considering they sold Zinchenko and Jesus to them last season.
Guardiola's success rate at City in the transfer market is pretty top tier, and there's basically no waste there other than players like Nolito, Danilo, and, so far, Kalvin Phillips, and there's certainly no history of signing players just so others can't.
They should try and include Phillips as part of the deal really, surely favours all parties. West Ham get a replacement that's probably suitable for them, Phillips gets to play, Rice gets a big move, City get rid of Phillip and pay slightly less for Rice.