Without doing anything, the Twins will get at least a quarter of their starts next year from people that didn't to it this year. Nolasco, Meyer, Dean, Albers and Milone combined for 45 starts, 282ip a 5.56 era and -1.2 WAR. They are all gone. If Molitor was smart (a big if, I know), Duffey wouldn't get 26 starts (-1.7 WAR) and May would. Berrios shouldn't be -1.6 WAR bad. So a rotation of Santana, Gibson, Santiago, Berrios and May/Hughes/Mejia is already better even without doing anything else. And if the Twins wanted to add a back end starter, they don't need to trade Dozier, they could sign Hammel or Tyson Ross. Moving Dozier for De Leon (admittedly, I'm the low man on him) is a waste of a resource.