I thought it would be a good idea to keep one experienced midfielder.
Jorginho left and if we let both Kante and Kovacic go we would not have any left. Mount is also leaving, possibly Gallagher as well. That leaves us with:
Enzo 22
Casadei 20
Santos 19
CC 19 (don't think he can play in pivot anyway)
And new MF will also be young Lavia, Ugarte, Caicedo...
I don't have a problem with one of them being in pivot starting with Enzo regardless age but are we really gonna have only these kids on the bench when realistically all should probably go on another loan?
With only PL and Poch playing 4231 having 4 midfielders is ok. But it should be Enzo, new MF, Kante/Kovacic and one youngster.
So if we cannot extend Kante just keep Kovacic even if that means losing him for free next summer.