They are connected because there are only two pitchers who can really be sent down, Parra and Villanueva. If McClung is kept, assuming a 12 man staff, the only opening is long relief with Shouse, Turnbow, Riske, Gange, Tores, and Mota cemented in barring injury. That means that Vargas has to go to the rotation instead of being long relief. That pushes either Parra or Villanueva out to Nashville with the other going down when Yo returns.