The Broncos are expected to hire San Francisco 49ers offensive assistant T.C. McCartney as their new quarterbacks coach.

As of Tuesday night, McCartney had not signed a contract, but had interviewed with the Broncos, a source said, confirming a report by The Athletic.

McCartney, 29, is the grandson of former Colorado coach Bill McCartney and the son of late CU quarterback Sal Aunese.

For the last two years, T.C. McCartney was on the same 49ers staff as new Broncos offensive coordinator Rich Scangarello. The 49ers went outside the organization for Scangarello's replacement, hiring former Miami Dolphins tight ends coach Shane Day.

After graduating from Boulder's Fairview High in 2007, where he was coached by his uncle, Tom McCartney, T.C. joined the LSU program as a quarterback. The Tigers' coach was Les Miles, a former CU assistant under Bill McCartney.

T.C. McCartney's coaching career includes graduate assistant posts at LSU (2011) and Colorado (2012-13) and stops with the Cleveland Browns (2014, quality control), LSU (offensive assistant, 2016) and the 49ers (2015 and 2017-18).

McCartney could be tasked with helping develop a rookie quarterback if the Broncos use the 10th overall pick on a passer or a selection in the second or third rounds. He is the fifth new offensive assistant coach, joining Scangarello, offensive line coach Mike Munchak, assistant offensive line coach Chris Kuper and tight ends coach Wade Harman.