Boise State has reportedly found its next head football coach.
Bruce Feldman of Fox Sports and The Athletic reported Avalos will receive a five-year contract.
Rains noted the school is expected to officially announce Avalos' hiring on Friday night.
New Boise State athletic director Jeramiah Dickey tweeted to Broncos fans on Friday afternoon that he has "been working to bring you the next great (Broncos) head coach!"
Dickey ended the post with "coming soon..." and the eye emoji.
Boise State found itself in the market for a new head coach after Harsin was hired by Auburn on Dec. 22. The Idaho native went 69-19 in seven seasons with the program.
Avalos will be returning to his alma mater as head coach when the hiring becomes official. He played linebacker for four seasons at Boise State from 2001-05.
Since graduating from college, Avalos has worked his way up the coaching ranks. The 39-year-old began his career as a graduate assistant at Colorado from 2006-08. He was an assistant at Boise State from 2012-18 for Chris Petersen and Harsin.
Oregon head coach Mario Cristobal hired Avalos as his defensive coordinator in February 2019. The Ducks ranked ninth in the nation in scoring defense (16.5 points allowed per game) in Avalos' first season.