Heinen struggled in the playoffs, generating a lone helper in eight games, after reaching the 30-point threshold in the regular season.
Heinen was back with the Bruins after last playing for the organization during the 2019-20 campaign. Despite limited power-play opportunities, the 28-year-old winger produced 17 goals and 19 assists, topping 30 points for the fourth time in his eight-year career. Looking ahead to next season, Heinen will hit the open market July 1 and could sign with a new team.