Heller will be recalled prior to Monday's game against the Angels.
The Yankees had called up Domingo German for long-relief help Sunday. He delivered 2.2 solid innings, but the team needs fresh arms, and Heller provides just that. In 27.2 innings at Triple-A Scranton/Wilkes-Barre, the 25-year-old has a 2.60 ERA and a 35:11 K:BB.