Could the San Francisco 49ers bolster their defense around new coordinator Robert Saleh thanks to his New York Jets ties?

SANTA CLARA, Calif. — Robert Saleh is reprising his role as the 49ers’ defensive coordinator, the team announced Friday night. Saleh returns to a vastly different unit than he left behind four years ago.

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.

Robert Saleh didn’t get the job he wanted, but the job he accepted could lead to a gig he desires next year. Saleh rejoined the San Francisco 49ers as their defensive coordinator Friday and the announcement was made shortly after the last of the three head-coaching openings for which he was a candidate was filled.

Some free agency signings work well, while others flop. The San Francisco 49ers may be ready to admit one of their recent moves was a mistake.

Following his dismissal as head coach of the New York Jets, Robert Saleh has wasted no time finding his next opportunity in the NFL. The former Jets leader has returned to the San Francisco 49ers, where he previously thrived as defensive coordinator.

After three seasons as the head coach of the New York Jets, the San Francisco 49ers announced on Friday that Robert Saleh will return as the defensive coordinator. The 49ers parted ways with their former defensive coordinator,