Siefkes previously served as Virginia Tech’s defensive coordinator in 2025 and spent two seasons as the Arizona Cardinals’ linebackers coach, a role he held under Gannon. The reunion with Gannon underscores the defensive coordinator’s influence in shaping Green Bay’s coaching staff.
Gannon’s arrival in Green Bay grants him latitude to identify assistants he’s familiar with and trusts, a dynamic that helped guide Siefkes from the college game back to the NFL. His industry reputation as a premier defensive mind—bolstered by his time with the Philadelphia Eagles—remains a guiding influence for the Packers.
The hiring signals a methodical approach to staff-building, with Hafley’s exit causing a noticeable gap. By aligning with Siefkes, Gannon aims to implement his defensive philosophy while leveraging a proven NFL and college-coaching background to develop the Packers’ linebackers.
From a roster-development perspective, Siefkes’ addition could help Green Bay optimize the front seven and cultivate younger linebackers under a coach with DC experience. It also reinforces the sense that Gannon will be a driving force behind personnel and scheme decisions on defense.
CBS Sports reported the hiring, noting that Siefkes’ path back to the NFL followed his Virginia Tech DC role and his prior stint with the Cardinals under Gannon. With the coaching staff beginning to take shape, Green Bay can now focus on potential roster upgrades ahead of the 2026 season.
