The Jets have placed OLB Bryan Thomas on injured reserve and signed linebacker Eddie Jones from the practice squad.
Thomas tore his left Achilles tendon in the Jets' Week Four loss to the Ravens on Sunday. The 10th-year pro is the longest-tenured Jet and one of the teams top pass rushers.
Jones, an undrafted rookie, was one of the final cuts in training camp and had been on the New York practice squad.
Read Kevin Fishbain's analysis of how the Jets will replace Thomas