Former 49ers assistant coaches find new jobs: Vic Fangio joins Bears, Brad Seely goes to Raiders (w/video)

The Chicago Bears hired Vic Fangio as their new defensive coordinator Tuesday, hoping the veteran coach who spent the last four seasons with San Francisco can breathe some life into the once-storied unit.

The Bears said they have reached an agreement with the 56-year-old Fangio to take over the Bears’ struggling defense under new coach John Fox. Terms were not disclosed.

Fangio had been a candidate for the defensive coordinator job with the Washington Redskins, who instead hired Joe Barry. Fangio was also bypassed for the 49ers’ coaching job, given to defensive line coach Jim Tomsula last week.

Fangio just finished his fourth season as 49ers defensive coordinator after coming from Stanford with former coach Jim Harbaugh before the 2011 season. San Francisco had one of the NFL’s top defenses during his tenure, but missed the playoffs at 8-8 last season following three straight NFC championship game appearances.

Fangio has 28 years of NFL coaching experience with 15 seasons as a defensive coordinator - Carolina (1995-98), Indianapolis (1999-2001), Houston (2002-05) and San Francisco. He also worked for the Saints and Ravens.

Brad Seely, the former San Francisco 49ers special teams coordinator, was named to the same role by the Oakland Raiders Tuesday. Seely will join head coach Jack Del Rio’s staff after spending the last four seasons with San Francisco.

A coaching veteran of 37 years, Seely has had NFL stints with the Indianapolis Colts, New York Jets, Carolina Panthers, New England Patriots, Cleveland Browns and 49ers.

With San Francisco from 2011-14, Seely oversaw one of the top units in the NFL. The 49ers are expected to hire Jets special teams coach Thomas McGaughey to replace Seely.

The Jacksonville Jaguars, meanwhile, hired former Raiders offensive coordinator Greg Olson for the same position, CBS' Jason LaCanfora reported Tuesday.

The Jaguars also hired former Buffalo Bills head coach Doug Marrone as assistant head coach and offensive line coach.