Jason Garrett, the Dallas Cowboys' offensive coordinator, is among several candidates for the Denver Broncos' head coaching vacancy, created Tuesday when Mike Shanahan was fired after 14 seasons. Garrett is expected to interview with Denver next week. Other candidates confirmed by the Broncos are Giants' defensive coordinator Steve Spagnuolo, Patriots' offensive coordinator Josh McDaniels, Buccaneers' defensive backs coach Raheem Morris and Broncos' offensive coordinator Rick Dennison. Garrett, the Cowboys' offensive coordinator for the past two seasons, interviewed with the Baltimore Ravens and Atlanta Falcons last year but opted to return to Dallas with a significant bump in salary.