Hanley, 27, split the 2017-18 campaign between the Arizona Coyotes and the Tucson Roadrunners of the American Hockey League (AHL). The defenseman appeared in five NHL regular-season contests with Arizona, posting two shots on goal, one hit and four blocked shots. Hanley spent the majority of the season with Tucson, registering 20 points (2-18=20) in 52 regular-season AHL games. He finished the season tied for fifth in the AHL with a team-leading +30 plus/minus, while he ranked third among Tucson defensemen in points (20) and assists (18). The defenseman also skated in nine postseason contests during the 2018 Calder Cup Playoffs, recording four assists (0-4=4) and a +2 rating.

Hanley has recorded six assists (0-6=6) and four penalty minutes in 22 career regular-season NHL contests with Montreal and Arizona. He has also registered 77 career points (11-66=77) in 259 career regular-season AHL games with Portland, St. John's and Tucson. Additionally, the defenseman has made three trips to the Calder Cup Playoffs, earning five assists (0-5=5) in 18 postseason games.

The 6-foot, 194-pound native of Keswick, Ontario was undrafted and originally signed as a free agent by Montreal on July 1, 2015.