Vance Joseph’s coaching staff in Denver continues to undergo changes.

John Benton, hired in January as the Broncos’ assistant offensive line coach, was recently granted permission by the team to interview for the 49ers’ top offensive line coaching position. On Monday, it was reported by The Sporting News that the sides were finalizing a deal.

The move was expected when the Broncos allowed him to interview and, according to an NFL source, Benton has already cleared out his belongings from the team’s facility.

The Broncos will search for a new assistant to work under offensive line coach Jeff Davidson and offensive coordinator Mike McCoy, but they don’t have a set timetable or targeted replacement yet.

A 14-year NFL coaching veteran, Benton was slated to be a key piece of Joseph’s new staff that was tasked with overhauling the offense and retooling the line. Benton had worked with Gary Kubiak (2006-13) as well as Joseph (2011-13) as the Texans’ offensive line coach.

While the Broncos look to fill Benton’s role, they added a new name to the coaching staff. Northern Colorado announced Monday that its defensive backs coach, Charles Gordon, has joined the Broncos as a defensive quality control assistant.

Gordon, a former NFL defensive back, signed with the Vikings after going undrafted out of Kansas in 2006. He played three seasons under the tutelage of Joe Woods, then the VIkings’ defensive backs coach and now the Broncos’ defensive coordinator.

Gordon joined UNC’s staff in 2013.