4. DL John Cominsky
Cominsky missed the entire 2024 season after suffering a torn MCL in his right knee early in training camp. Over the previous two seasons with the Lions he had 66 total tackles, seven tackles for loss, six sacks and 20 quarterback hits as a useful and versatile defensive line piece.
Cominsky found a home in Detroit after being picked up off waivers in 2022. This season's injury makes it unlikely he'll be re-signed this offseason, but landing back with Glenn in New York is definitely in the cards as the Jet re-tool parts of their defense.
3. LB Derrick Barnes
Barnes' 2024 season ended very early (Week 3) due to a torn MCL and PCL in his right knee after he was hit by a low block. His ACL remained intact, so there seemed to be a faint chance he could've returned before the season ended. But that was put to bed before the regular season was over, and the Lions' playoff run didn't last long enough anyway.
Over the last couple seasons, Barnes fully developed into a really good all-around off-ball linebacker in Glenn's defensive scheme. Aside from whatever concern there could still be about his injury recovery come March, the Lions also have some good depth at linebacker and could let him explore the open market without fear they won't be able to replace him.
Barnes was a college defensive end who made the full transition to linebacker when he got to the NFL. That versatility is something Glenn would value, along with knowing him well. The Jets' new defensive scheme (again assuming a replication of what Glenn did in Detroit) would require more traditionally-sized linebackers, not someone like Jamien Sherwood, who thrived in the previous scheme this season but is a converted safety (216 pounds).