I think Gomes was definitely rested so there's one. Plus he played well in the away fixture.
Gana clearly won't be dropped so there's your second.
Sigurdsson just scored two at the weekend, so unless he decides to put him in the false 9 for the first time since unsworth, or puts him out wide, there's your third man.
Only question is up top and out left I think. Whatever happens I think you need Richarlison on the pitch bad form or no, we might just need one moment and he can provide even when playing bad.
I'd personally like him on the right with Bernard on the left, but I don't think that will happen because we'll be playing on the break, so DCL up top and big Theodore on the right.