I'd go, in order of priority:
ST: Cavani > Costa > Suarez > Benzema > Lukaku > Balotelli
RB: Sagna > Coleman > Jung/Aurier
CM: Pogba > Schneiderlin > Kroos > Bender (either one) > Gustavo
CB: Varane > Benatia > Vermaelen > Garay > Mangala > Ginter
Bonus attacker: Reus/Draxler/Barkley/Lallana/Firmino/Drmic/Lacazette/Griezmann/Remy, etc.
If we had one player from each of these categories on September 1st I'd be pleased enough. If we ended up with my worst-case scenario:
ST: Balotelli
RB: Aurier
CM: Gustavo
CB: Ginter
Bonus: Drmic
(Sagna and Vermaelen move on)
I'd be a bit disappointed but generally pleased assuming we don't lose anyone else. Anything less than this sort of movement and its groundhog day.