As the San Francisco 49ers and new head coach Chip Kelly work to put together the team's coaching staff for the 2016 season, we'll update the names of the coaches that the team is reportedly interested in or reportedly contacted, interviewed, or acquired for each position. Please note that these are simply the reported candidates by various media sources and that nothing is official until the 49ers themselves make the announcement.

The latest is that the 49ers have hired Jim O'Neil for their vacant defensive coordinator position and former Dolphins RBs coach Jeff Nixon to coach tight ends. These moves fill the major pieces of Kelly's coaching staff.

49ers linebackers coach Jason Tarver, who is well liked by Kelly and the players, was considered to be a strong candidate for the defensive coordinator job. He will remain with the team as the outside linebackers coach.

Names in bold represent those that have been reportedly brought in to fill a position.

Head Coach *
Former Eagles head coach Chip Kelly hired on Thursday, January 14.

Offensive Coordinator *
Reportedly eying Lions running backs coach Curtis Modkins.
Bills assistant head coach and running backs coach Anthony Lynn interview scheduled.
Lions running backs coach Curtis Modkins reportedly hired.

Defensive Coordinator *
Texans linebackers coach Mike Vrabel interviewed.
49ers defensive coordinator Eric Mangini interviewed.
Job offered to and turned down by Texans linebackers coach Mike Vrabel.
49ers linebackers coach Jason Tarver in the running.
Ravens linebackers coach Don Martindale in the running.
Former Browns defensive coordinator Jim O'Neil interviewed.
Texans secondary coach John Butler interviewed.
Former Browns defensive coordinator Jim O'Neil reportedly hired.

Special Teams Coordinator *
Eagles deny permission to speak to special teams coordinator Dave Fipp.
49ers special teams coordinator Thomas McGaughey in the running.
49ers assistant special teams coach Richard Hightower in the running.
Former Bears assistant special teams coach Derius Swinton reportedly hired.

Quarterbacks Coach *
Eagles quarterbacks coach Ryan Day reportedly hired.

Wide Receivers Coach *
Eagles wide receivers coach Bob Bicknell reportedly hired.

Running Backs Coach *
49ers running backs coach Tom Rathman retained.

Tight Ends Coach *
Former Dolphins running backs coach Jeff Nixon reportedly hired.

Offensive Line Coach *
Eagles deny permission to speak to offensive line coach Jeff Stoutland.
Giants offensive line coach Pat Flaherty interviewed.
Titans offensive line coach Bob Bostad being looked at.
Giants offensive line coach Pat Flaherty reportedly hired.

Defensive Line Coach *
Eagles defensive line coach Jerry Azzinaro reportedly hired.

Inside Linebackers Coach *
Former Buccaneers linebackers coach Hardy Nickerson interviewed.
Former Buccaneers linebackers coach Hardy Nickerson reportedly hired.

Outside Linebackers Coach *
49ers outside linebackers coach Jason Tarver retained.

Defensive Backs Coach *
Eagles deny permission to speak to defensive backs coach Cory Undlin.
Former Browns secondary coach Jeff Hafley reportedly hired.

* Position reportedly filled

On Friday, January 22, the 49ers fired defensive coordinator Eric Mangini.

On Monday, January 18, the 49ers have parted ways with 2015 offensive coordinator Geep Chryst, quarterbacks coach Steve Logan, receivers coach Ronald Curry, secondary coach Tim Lewis, defensive line coach Scott Brown, defensive assistants Ejiro Evero and Aubrayo Franklin, and offensive assistants T.C. McCartney and Joe Scola.

Know of any reported 49ers coaching staff news that is not listed here? Let us know.