I agree actually. I was just guessing possibilities for the next season.
4-2-3-1 is archaic system barely used in modern football. Liverpool, City, Real, Barca, Juve all play with one number 6 and two number 8.
So Jorginho/Gilmour are only players capable of playing deeper. And now for number 8 is a problem. OK for Mount, RLC and Barkley. Their perfect position.
Kovacic is great to have for more pragmatic approach. But Kante is completely luxury player in this system we are planning to play. Sell him and buy SMS/Aouar. Again perfect players for the system.