AP Source: Kubiak not returning to Broncos staff

The photograph of the Denver Broncos new head coach Vic Fangio hangs on a wall outside the meeting room where Fangio was introduced at a news conference at the team's headquarters Thursday, Jan. 10, 2019, in Englewood, Colo. (AP Photo/David Zalubowski)

Denver Broncos new head coach Vic Fangio, right, greets wide receiver Emmanuel Sanders after a news conference at the team's headquarters Thursday, Jan. 10, 2019, in Englewood, Colo. (AP Photo/David Zalubowski)

Denver Broncos new head coach Vic Fangio, center, joins team president Joe Ellis, left, and general manager John Elway for a photograph during a news conference at the team's headquarters Thursday, Jan. 10, 2019, in Englewood, Colo. (AP Photo/David Zalubowski)