I think, Perisic gonna accept Inter's new offer, so we gonna sign Kostic. This way, Raspadori not needed. Center back and left back is a must, dunno if Arsenal willing to sell Gabriel.
I am sure Di Maria and Pogba will arrive. We will let Arthur to leave (can imagine a 2y loan here) and Fagioli stays as Locatelli's sub, no other changes on MID.
So, what I believe:
Pogba
Di Maria
another winger (maybe Kostic) and Soulé + Aké will be first team members
Left back -> Udogie
Centre back
This would already mean 5 new signings, others will depend on the departures.