The Green Bay Packers face another offseason shakeup as the coaching exodus continues following the departure of former defensive coordinator Jeff Hafley to the Miami Dolphins. Linebackers coach Sean Duggan is reported to be leaving for Miami to join his former boss, a move that deepens the turnover on the defensive staff.
Duggan’s exit comes on the heels of the Dolphins hiring Hafley as their head coach and already coaxing other Green Bay assistants south. Defensive backs coach Ryan Downard is expected to follow, and that pairing would leave significant holes in Green Bay’s position‑coach group ahead of spring workouts.
The loss complicates a defensive rebuild that already includes a new coordinator and several schematic changes. Duggan was promoted internally last season and worked with a young group of linebackers, and his familiarity with the roster had been viewed as a stabilizing factor. Replacing that institutional knowledge will be a priority for the new defensive leadership.
From Miami’s perspective, consolidating coaches who have previously worked together helps install a familiar system and accelerates staff cohesion. For Green Bay, the outward movement highlights the ripple effects when a coordinator departs for a head‑coaching opportunity, creating a domino effect that can unsettle player development and continuity.
Green Bay Packers Lose LB Coach Sean Duggan to Jeff Hafley’s Miami Dolphins
Green Bay has lost Duggan to the Dolphins after Hafley agreed to sign as their new head coach. This can be seen in an article by Justis Mosqueda for Acme Packing Company.
South Florida is going to have a lot of former Green Bay Packers moving forward. Not only have the Miami Dolphins taken Jon-Eric Sullivan (general manager), Jeff Hafley (head coach), Ryan Downard (pass game coordinator) and Venzell Boulware (pro scout) from the team, but Miami will also get linebackers coach Sean Duggan in the divorce, according to the Milwaukee Journal Sentinel’s Tom Silverstein.
This should be no surprise, as Duggan joined the Packers from Hafley’s Boston College staff. In 2024, Duggan was the team’s assistant linebackers coach, working under Anthony Campanile, now the Jacksonville Jaguars’ defensive coordinator. When Campanile left Green Bay, Duggan was internally promoted to be the team’s linebackers coach for the 2025 season.
Ultimately, how Green Bay responds will shape its defensive identity for the coming season. The team must balance promoting from within to preserve continuity against hiring fresh voices who can execute the new coordinator’s vision.
For Packers players and supporters, the departures are a reminder that coaching staffs are often transient in today’s league. The organization’s next moves will determine whether the defense stabilizes quickly or endures a prolonged adjustment period.
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