I've been on this wagon since before the season started. We would likely need to move JT to make it happen. Perhaps packaging JT and Viz together to a large market team in need of pitching, like the Angels. Just spit balling there.
I do like the idea of Donaldson on a short term deal with incentives. OF can be addressed via trade and hopefully that player isn't making too much money. That would leave plenty to throw at Kimbrell.
I know people don't like throwing money at RPs, but guys like Kimbrell, Chapman, Rivera, Wagner, etc. are the exceptions to the rule. Also, contending teams that need a reliable closer like we do either have to sign one or trade for one. Considering the going rate for top level closers on the trade market, I'd rather pay Kimbrell 15 million than trade multiple top 10 prospects for guys like Treinan.