The Twins are pretty good at converting starters to relievers. I'd like to see them try that more often with free agents who have done poorly in the rotation but might have something to unlock in the bullpen. The Orioles were successful doing that with Jorge Lopez and then they dealt him to the Twins for a pretty nice prospect haul. Grab a few guys who are free agent starters with an ERA around 5 and move them to the bullpen in AAA. If you can make 1 Brock Stewart every year it will more than pay for itself.
Example names: Chris Flexen, Jose Urena, Luke Weaver, Justin Dunn, Austin Voth, Julio Teheran, Zach Davies