Jack Grealish, Max Aarons, and a DM with a similarly combative style to McTominay/Fred but more ability on the ball (Zakaria gets a lot of mentions on here, but I'm not familiar).
A lot will depend on whether Tuanzebe and Bailly can prove themselves to be reliable. Assuming they do, the above 3 would be my only choices. Our squad would then become fantastically well rounded, imo. Though if one of DDG and Henderson were to leave, a cheap backup would obviously need to come in.
GK: DDG/Henderson
RB: Aarons/AWB
CB: Maguire/Tuanzebe
CB: Bailly/ Lindelof
LB: Shaw/Telles
DM: McTominay/Matic
DM: New DM/Fred
AM: Bruno/VDB
RW: Grealish/Diallo
LW: Rashford/Martial
CF: Cavani/Greenwood
With Cavani and Matic coming to the end of their careers, there'll be space for the likes of Garner, Mejbri, Pellistri to stake their claim in another season or two.