*LB Larry Izzo has been placed on injured reserve, and they have signed rookies LB Josh Mauga (Nevada) and C Michael Parenton (Tulane) to the practice squad. Both had stints on the team in training camp.
Mauga seems like an interesting prospect. He was brought in during camp on August 16 and was waived/injured on August 28. He was a team captain at Nevada as a junior and was productive when he was on the field. Unfortunately, he's had a lot of injury problems in college, and his first Jets tenure earlier this year was ended with an injury. He's 6-2, 245, so he has size for the 3-4 ILB position that he'd likely be playing if he ever made the team.
Update (3:50): DL Antonio Garay was claimed off the Jets' practice squad by San Diego, so that's where one of the practice squad vacancies came from.