Even though no one really saw this coming (even though it had been mentioned, I don't recall anyone mentioning Donaldson as Option #1 when push came to shove), this really could be the best-case scenario if there's enough money. Right-handed power bat to hit behind Freddie and buy Riley time, big upgrade over Markakis on an OF corner, big upgrade defensively behind the plate. Letting Donaldson walk next winter helps lessen the blow from the international penalties since you'll add a Top 35-ish pick.
Not sure there's still $25-$30 million (or more) left, but there's still more money "available" than we've talked about to this point because we haven't really been talking about backloading deals. I don't think you want to get crazy doing that, but with Donaldson's $23 million, Julio's $12 million, and O'Day's $9 million coming off in 2020, I don't see any reason AA couldn't pay a large chunk of the money owed to a Brantley/McCutchen and a Closer next year while Acuna/Albies/Camargo/Dansby/Flow/Riley/Contreras/Pache and the arms are still really cheap.