Another option would be to go full Mowbray, take Livermore out and don’t bother with a defensive midfielder at all (although not really something I would be keen on). Krov, Sawyers and Pereira, with options to fit Brunt and Harper in there.
I'd be keen to see more of a 433 with Sawyers sitting and Harper and Krovinovic in more advanced positions and i do think this is something Bilic has done in the past. It'd be a risk because Sawyers has amazing composure on the ball but i'm not sure how he is going into tackles.
In front of those 3 you could go Pereira/Diangana, Austin and Phillips/Edwards.
We'd be potent going forward, hopefully more clinical in the box though i'm not sure how well we'd do defensively in open play.
Of course, there's always 442 which Bilic mentioned in pre-season where we could see a 4 across the middle of Pereira/Diangana, Sawyers, Krov, Phillips/Edwards and then Austin and Zohore starting.