The Packers recently lost defensive coordinator Jeff Hafley when he took the Dolphins’ head coaching position. The search for his replacement has come to an end.
Green Bay is hiring Jonathan Gannon to fill the DC position, as first reported by NFL Network’s Tom Pelissero. The former Cardinals head coach has thus managed to find a new opportunity not long after his Arizona firing. Gannon was one of three candidates known to have interviewed with the Packers. 
Interest in multiple D-coordinator openings was present in Gannon’s case. The Commanders interviewed him once, while the Cowboys conducted a follow-up with him last week. Gannon was also among the candidates who spoke with the Titans about their head coaching position, but a return to the DC ranks has long been expected in this case. Both the Chargers and Giants were interested in Gannon, ESPN’s Rob Demovsky reports. Green Bay moving quickly with this hire may have been a reaction to the threat of other DC offers being made shortly.
Gannon spent three seasons leading the Cardinals. Hired alongside general manager Monti Ossenfort to oversee a rebuilding effort, Arizona went 4-13 during his first year on the sidelines. The team’s win total doubled in 2024; that encouraging campaign saw the Cardinals in contention for a playoff berth for much of the season. A poor showing after the bye produced only a pair of wins down the stretch, however.
Expectations were high for Gannon’s team to at least match its success from the prior year entering 2025. Things did not go according to plan, however. Following a 2-0 start, the Cardinals lost five consecutive one-score games. A win coming out of the bye seemed to offer the potential for a turnaround, but as injuries across the roster piled up Arizona ended the year on a nine-game losing streak. Leading up to ‘Black Monday,’ it increasingly appeared as though Ossenfort would be safe while Gannon would be dismissed. That was indeed the path ownership took.
Prior to his Cardinals tenure, Gannon coordinated the Eagles’ defense for two years. Philadelphia ranked top 10 in yards allowed during the 2021 and ’22 seasons; the team improved from 18th to eighth in scoring defense under Gannon. With the Eagles reaching the Super Bowl during Gannon’s final year in Philadelphia, it came as little surprise when he received a head coaching opportunity. Expectations will no doubt be tempered if Gannon, 42, is to get another HC look in the future.
Upon returning to coordinator duties, however, Gannon could once again see quick success. Green Bay largely thrived on defense during Hafley’s two-year run leading the unit. Injuries midway through the 2025 campaign – highlighted of course by Micah Parsons‘ ACL tear – proved to be impactful, and the Packers struggled on defense through the end of the season and in the wild-card round. That did not stop Hafley from being among the top HC candidates during this year’s hiring cycle, and few were surprised when he followed Green Bay colleague Jon-Eric Sullivan to Miami.
Gannon had a lengthy track record of NFL coaching gigs prior to his Eagles coordinator opportunity. Much of that time was spent as a position coach working with defensive backs, and the secondary looms as a unit which could see considerable attention from the Packers this offseason. Gannon will be tasked with overseeing improvement on the back end in particular for Green Bay in 2026 as he takes charge of a defense for the second time in his career.