The Mets optioned Young to Triple-A Syracuse on Saturday, Mike Puma of the New York Post reports.
Young's demotion opens up a spot on the 26-man roster for Reed Garrett (elbow), who was activated from the 15-day injured list. After being claimed off waivers from the Giants on July 17, Young joined the Mets a few days later and posted a 1.29 ERA and 1.00 WHIP across seven innings out of the bullpen. The southpaw will be a leading candidate for a call-up the next time the Mets are in need of a fresh relief arm.