The Buffalo Bills are interviewing Philip Rivers for their vacant head-coaching position on Friday, sources confirmed to CBS Sports' Jonathan Jones. It's the first known interview for Rivers, who returned to the field in December for the Indianapolis Colts after five years on the sidelines after quarterback Daniel Jones suffered a season-ending injury.

After coming out retirement to play three games at the quarterback position, Philip Rivers reportedly is throwing his hat toward one of the NFL's vacant head-coaching jobs.

Rivers was set to interview Friday for the Buffalo Bills’ head coaching job, according to reports.