Sheets can't be a bench guy at his age. If he's not starting 5+ times a week, then he needs to be playing every day in AAA.
However, stashing a lefty at AAA so you can shoehorn three high swing and miss, defensively deficient righties into the lineup seems misguided.
I let teams know either Eloy or Vaughn is available, and see which one fetches the best price.