Lebeau continued his scoring prowess in the American Hockey League after being signed by the Montreal Canadiens in 1986.

He played one season in the AHL with the Sherbrooke Canadiens and led the league with 70 goals and 134 points as a rookie, which garnered him three major awards, including the Dudley "Red" Garrett Memorial Award as the league's top rookie.

Lebeau's 70 goals still stands as the AHL single season record.

However the next season he failed to produce at the same clip, and midway through was traded to the Mighty Ducks of Anaheim for goalie Ron Tugnutt.

He currently resides in Sherbrooke, Quebec and runs the hockey program at Bishop's College School in Lennoxville.