The Boston Bruins have signed recently acquired prospect Michael Callahan to an entry level contract. In this video I look at Mike Callahan's career with the Providence Friars and his time with the Arizona Coyotes. I also give my thoughts on this trade for the Bruins and how I think the impact of Providence coach Nate Leaman will help this player. Players and teams talked about in this video include Mike Callahan, Riley Duran, Bruins, Friars, and Providence Bruins.