To start the next year, Boston assigned him to the Moncton Golden Flames of the AHL, where he went 3–0 to start the season, and wound up spending the rest of the year with Boston. The replacement of Bruins coach Butch Goring with Terry O'Reilly led to Ranford falling out of favour, and eventually being dealt on March 8, 1988 from the Boston Bruins with Geoff Courtnall to the Edmonton Oilers in exchange for Andy Moog.