Wenger's comments about needing 1-2 are petrifying, I'd rather be bold and go for a strategy of bringing in a sizeable crop of young players willing to play Europa league, instead of toiling (and failing) to get big name players who won't.
DF: Szczesny, Chambers, Gibson, Kolasinac
MF: Fornals, Golovin, Torreira, Harit
FW: Mbappe, Dolberg, Lemar/Zaha/Onyekuru
Change of plan: completely unrealistic wishlist.
Throw the kitchen sink at the best midfielder and best attacker; Verratti and Mbappe. Someone cheap like Onyekuru, Kolasinac on a free, Maybe a Ben Gibson.
First XI plays PL games:
----------------Szczesny
Bellerin - Mustafi - Kos - Kolasinac
-----------Verratti - Xhaka
-----Onyekuru - Özil - Sanchez
---------------Mbappe
The rest play cup games:
--------------------Cech
Chambers - Gibson - Holding - Monreal
--------------Cazorla - Elneny
---Ox -----------Ramsey-------Iwobi
-----------------Welbeck
Get some youngsters through in the mix:
Bramall, Maitland-Niles, Bennacer, Nwakali, Willock, Nelson, Malen