Potter (shoulder) was placed on the Flames' injured non-roster list Tuesday, Pat Steinberg of Sportsnet 960 The Fan reports. Potter won't officially count as a member of the 23-man roster, and there's a good chance the Flames will send him to the minors once he's deemed healthy. The 30-year-old blue liner appeared in 19 games for the Oilers and Bruins last season, tallying no goals and five assists.