While Burnes would most likely be a rental, there's a lot of comps of high ceiling pitchers who don't pan out because of injury or other. Point being is while Priellipp's potential is there, but he may never be the pitcher we think he could be. The compensatory pick would most likely be in Round A, so you're trading Festa for a pick. Clearing salary, whether it's used for a Lewis extension, a splash move on someone like Hoskins, a high leverage bullpen arm, is an easy call regardless if it's a rental or not. Just because Burnes has said he wants to test FA, I'd argue the chances of resigning him are every bit as high as Festa becoming a front line starter and/or Priellipp reaching his. For a chance to get to the WS and maybe win with Lopez/Burnes as our 1-2, I'd take those chances especially when the worst case scenario is we get a 1st round talent to replace Festa if he walks.