I agree about the Vinicius replacement.
But if we are assuming Son and Alli will be fixtures in the trio behind Kane, that leaves Moura, Lamela, Bergwijn, Lo Celso and Ndombele as options/cover for the third spot. I'd guess most managers will play our FBs higher than Mourinho ever did, meaning we are unlikely to start often with two out-and-out wide forwards. It's more likely to be one, and two more interchanging #10s (more like Alli and Eriksen used to).
This is the sort of (realistic) squad I'd like to see us start next season with:
-----------------------------------Lloris/Gazzaniga
Foyth/Bogle-------Dier/Sanchez-------Andersen/Rodon-----Reguilon/Sessegnon
----------------------Hojbjerg/Skipp-------Lo Celso/Winks
-----Ndombele/Lamela-----------Alli/Moura----------Son/Bergwijn
-----------------------------------Kane/Dzeko
I know some people might scoff at the likes of Dier, Foyth, Winks and Sanchez still being in there, but I think all clearly have the raw materials and are still young enough, that with some fitness, confidence and coaching, they can quickly make real strides again.