Sean McDermott has been confirmed as Rex Ryan's replacement as head coach of the Buffalo Bills.
The Bills announced the appointment of Carolina Panthers defensive coordinator McDermott on Wednesday, with the franchise seemingly still focused on a defense-first path to success.
McDermott was reportedly in Buffalo for a second interview on Wednesday, after meeting with Bills owners Terry and Kim Pegula in Florida last week.
The hope will be that McDermott, whose defense led the Panthers to Super Bowl 50 a year ago, finds a way to restore the defensive lustre lost during the Ryan regime.
Buffalo ranked in the top five in the league in scoring defense, yards per game and passing yards per game in 2014 under Doug Marrone, but the Bills saw their fortunes plummet under Ryan and his brother Rob, who ran the unit in 2016.
Both Rex and Rob Ryan were fired with one game left of a season in which the Bills were 29th in the NFL in rushing defense, allowing 133.1 yards per game.
McDermott has been in charge of Carolina's defense for the past six seasons after spending the previous 10 years on the Philadelphia Eagles' staff and two more in an administrative position there.
Several reports have indicated McDermott would prefer to bring former San Diego Chargers head coach Mike McCoy with him to Buffalo as offensive coordinator.
McCoy previously held that role with the Denver Broncos and is widely respected around the league. However, he appears to be in high demand and could have several offers to weigh up.
Hiring McCoy would likely leave the Bills' former interim coach, Anthony Lynn, working elsewhere next season.
Lynn was promoted from running backs coach to offensive coordinator after Greg Roman was fired from that position two games into the 2016 season, then ran the team for the final game after Ryan's dismissal.
He was a candidate for the full-time head coaching job in Buffalo and has reportedly interviewed or been connected with the other head coaching vacancies with the Los Angeles Rams, San Francisco 49ers and San Diego Chargers.