The San Francisco 49ers stayed in-house for their next head coach and elevated Jim Tomsula from defensive line coach, ESPN reported Wednesday.

Contract details were still being worked out with Tomsula, according to the report.

Denver Broncos offensive coordinator Adam Gase was thought to be the other leading contender for the 49ers’ head coaching job.

The 46-year-old Tomsula, who has served as San Francisco’s defensive line coach for the past eight years, will take the job vacated by Jim Harbaugh.

Harbaugh left the 49ers after an 8-8 record in 2014 to become the new head coach at Michigan. In the previous three seasons in San Francisco, Harbaugh guided the Niners to three NFC Championship games and one Super Bowl appearance.

In addition to the defensive line duties with the 49ers, Tomsula took over as the team’s interim coach for the final game of the 2010 season after Mike Singletary was fired as head coach.

Tomsula’s NFL experience is solely with the 49ers. He joined the team after working for the Rhein Fire of the former NFL Europe league. He was the Fire’s head coach for one season.