Stempniak, scheduled to become an unrestricted free agent on July 1, will be playing for his ninth team in 11 seasons. He has played 771 NHL games for the St. Louis Blues, Toronto Maple Leafs, Phoenix Coyotes, Calgary Flames, Pittsburgh Penguins, New York Rangers, Winnipeg Jets and Devils.
The Bruins also acquired defenseman John-Michael Liles from the Carolina Hurricanes in a trade for left wing Anthony Camara, a third-round pick in the 2016 NHL Draft and a fifth-round pick in the 2017 NHL Draft.