The Reds designated Zulueta for assignment Thursday.
The move frees up a 40-man roster spot for the addition of Pierce Johnson, whose signing was made official Thursday. Zulueta has made 19 relief appearances over the last two seasons with the Reds, collecting a 5.32 ERA and 25:11 K:BB across 23.2 frames. The righty will turn 28 next week and stands a good chance of passing through waivers unclaimed.