Spending 30m on Donny would make sense if we didn't need a new LB, RB, CB, CF....and that's at the bare minimum.
You can't sign all of those at once. Donny fixes a problem in midfield that we would have after we get rid of Rakitic and Vidal and turn Busi into a squad player. All 3 of those use to start for us next to De Jong.
We lose 3 midfielders, we need 1 signing here.
With Dembele hopefully staying fit for once, and with Trincao coming up, we can see that as improvements for the attack.
Defense will have to do with Araujo added in the line-up. RB and LB can wait a season. See how Firpo and Semedo do with actual wingers ahead of them. Something we almost never had with Griezmann and Messi, one being a central forward, and the other only being a RW on paper.