The 30-year-old joined Montreal at the trade deadline from the New York Islanders and had six goals and nine assists in 18 regular season games with the club. Vanek added five goals and five assists in 17 playoff games but was criticized for disappearing during the Eastern Conference final.
Vanek split the 2013-14 campaign between the Buffalo Sabres, Islanders and Canadiens and altogether had 27 goals and 41 assists for 68 points in the final season of a seven-year, $50 million contract.
Vanek has scored 277 goals and earned 279 assists in 663 career NHL regular season games.
Murray signed a one-year contract worth $1.5 million with the Canadiens last August. The 34-year-old defenceman tallied two assists in 53 games with the Canadiens this season.
Parros, who was part of the 2007 Stanley Cup-winning Anaheim Ducks, was traded to the Montreal Canadiens last July for Philippe Lefebvre and a 7th round draft pick in 2014. In the home opener against the Toronto Maple Leafs this season, the 34-year-old enforcer was taken off on a stretcher with a concussion following a fight with Colton Orr. He managed to play 22 games for the Canadiens this season, recording one assist.