Are Yankees prepping Justus Sheffield call-up with bullpen move?

There are several ways of looking at the Yankees listing top pitching prospect Justus Sheffield as a reliever Tuesday night when Triple-A Scranton/Wilkes-Barre played Buffalo. Originally, he was supposed to start. The first is that the 22-year-old lefty was being prepared to become a part of the Yankees’ late-season bullpen when rosters expand on Sept….