The biggest concern surrounding the San Francisco 49ers' reunion with Robert Saleh is the possibility of him becoming the team's third consecutive one-and-done defensive coordinator.

Saleh, who was fired in October as the New York Jets head coach five games into his fourth season, generated interest on the head-coaching front and was seen as one of the frontrunners for the Jacksonville Jaguars job. He also interviewed with the Las Vegas Raiders and Dallas Cowboys.

Robert Saleh wasted little time after being fired from the New York Jets last fall amid a poor showing throughout the season. He quickly began working with the Green Bay Packers' defense following his dismissal, and now the Super Bowl -winning coach is back with his former employer.

Robert Saleh will be on the San Francisco 49ers’ sideline this upcoming season. The 49ers are set to bring back the former New York Jets head coach.

Later on Thursday, then-Tampa Bay Buccaneers offensive coordinator Liam Coen had a change of heart, the Jacksonville Jaguars quickly moved to hire him as head coach and Saleh, who told Kyle Shanahan and John Lynch that he’d return to the 49ers if he didn’t get a head-coaching job, stayed true to his promise.

San Francisco 49ers head coach Kyle Shanahan is welcoming 49ers defensive coordinator Robert Saleh back to the same role, per NFL Media. Saleh served as Shanahan's original 49ers defensive coordinator for four seasons from 2017 to 2020,

Until Robert Saleh has officially signed a contract with the San Francisco 49ers, the rumors will continue to persist.

The San Francisco 49ers and head coach Kyle Shanahan announced that Robert Saleh has been named as the team’s defensive coordinator.