Soderberg will be an unrestricted free agent on July 1. ESPN.com
The 29-year-old forward played 161 regular-season games for the Bruins and posted 29 goals and 65 assists for 94 points. He also played in 14 playoff games for Boston with one goal and five assists for six points.
Originally selected by the St. Louis Blues in the second round (No. 49 overall) in the 2004 NHL entry draft, Soderberg was acquired by the Bruins in exchange for goaltender Hannu Toivonen on July 23, 2007.
Soderberg spent seven seasons playing in Sweden before he arrived in Boston during the 2013 lockout-shortened season. He never lived up to expectations, and it wasn't long before new Bruins GM Don Sweeney decided to move on.