And in the season between the two?
Ancelotti created a system where Allan, Doucoure and A.N. Other bossed the midfield in plenty of games, got at least parity in several more and only really struggled against the very best teams.
But sure, let's sell Doucoure and Allan, and start with Gomes, Davies and someone else in 2022/23. Good Lord above.
The sensible plan is to ship out Gomes and Davies, then bring in new starters who are better than Allan and Doucoure. Why? Because Allan and Doucoure are better than Davies and Gomes, so making them the backups raises our "floor" and makes our starting lineup better. Doing it your way makes the same improvement to the starting lineup better but keeps the very low floor where it is. The moment there's an injury in your version, Gomes has to start games. Unless you know of a transfer target who is totally impervious to injury, your approach leads to the lesser outcome.