Like all MLB teams, the New York Mets have a handful of players in their system who are serving as depth. They also just parted ways with three minor league relievers (according to Mike Mayer of Metsmerized) with some notable Major League experience, some of which having had one, if not multiple, successful seasons. However, with the Mets adding three huge pieces to their bullpen at the deadline, in Tyler Rogers, Gregory Soto, and Ryan Helsley, it looks like they no longer need that added depth.
The most notable reliever here is arguably Julian Merryweather.