Following a massive overhaul of his coaching staff, New York Jets coach Aaron Glenn filled his latest vacancy, plucking yet another member from Dan Campbell’s staff in Detroit.
According to ESPN’s Adam Schefter, the Jets are hiring Detroit Lions assistant tight ends coach Seth Ryan as their new passing game coordinator. The move can be viewed as a full-circle moment for Ryan, as his father, Rex, and his grandfather, Buddy, both coached for the Jets during their respective careers in New York.
Ryan began his coaching career in 2019, serving as an offensive quality control coach for the Los Angeles Chargers under then-coach Anthony Lynn. After his firing in Los Angeles, Lynn headed to Detroit to become the offensive coordinator on Dan Campbell’s inaugural coaching staff. Ryan followed Lynn to Detroit, initially serving as the Lions’ assistant wide receivers coach.
The Lions dismissed Lynn after one season, but Ryan remained on Campbell’s staff for several seasons before moving to assistant tight ends coach as part of a major reshuffling following the exit of eight coaches in the 2025 carousel.
With former Lions wide receivers coach Antwaan Randle-El, Ryan was instrumental in developing Amon-Ra St. Brown and Jameson Williams. In 2024, Ryan helped St. Brown earn his second First-team All-Pro and third straight Pro Bowl nod. St. Brown ranked second in NFL receptions (115), second in receiving first downs (72), third in receiving touchdowns (12), and fifth in receiving yards (1,263).
Ryan helped Williams achieve his first 1,000-yard receiving season (1,001) and a career-best seven touchdowns. Under Ryan, St. Brown and Williams became the second pair in team history with at least 1,000 yards and seven touchdowns each in a season.
Before taking the Jets job, Glenn served as the Lions’ defensive coordinator for the previous four seasons (2021-2024). After accepting the Jets’ role, Glenn brought several Lions assistants with him to New York, including Steve Heiden, who would become his offensive line coach, and Tanner Engstrand, who would serve as offensive coordinator. Glenn also added Dre Bly, who served as the Lions’ cornerbacks coach for one season (2023).
After overhauling his coaching staff, which included the firings of eight assistants, including Engstrand and Bly, Glenn turned to the Lions staff again to fill some vacancies, attempting to lure Lions defensive assistant and safeties coach Jim O’Neill to New York to fill his defensive coordinator vacancy.
After O’Neill opted to stay with the Lions on a new contract, Glenn hired Brian Duker for the vacancy, another name with whom he had worked for several seasons as part of Campbell’s first staff in Detroit.
Because of this, Glenn, once again looking to some familiarity in Detroit to fill out his staff, should not come off as too surprising. Glenn’s first season as the Jets coach was unsuccessful, as they finished 3-14, last in the AFC East.