Dermott (upper body) signed a professional tryout agreement with the Oilers on Tuesday, Mark Spector of Sportsnet reports.
Dermott struggled with seven points in 50 games for Arizona last season. The 27-year-old will head to the Oilers with a chance to win a bottom-pairing job on the blue line, though he begins the preseason behind his fellow former Coyotes in Troy Stecher and Josh Brown.