Reflecting on Robert Saleh's time with the San Francisco 49ers, Jacksonville Jaguars' Arik Armstead explains what made him an effective coach

Now that the San Francisco 49ers have hired Robert Saleh, some believe he'll bring a key defensive player from the New York Jets with him.

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.

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

The 49ers and Jets both enjoyed top-five defenses under Saleh. There’s little reason to expect Saleh to stray away from what’s made his defenses elite. There also may not be m