With restricted free agents Reilly Smith, Justin Florek, Jordan Caron, Torey Krug and Matt Bartkowski left to sign, the Bruins need more space to strengthen their roster for the 2014-15 campaign.
The Bruins were unable to re-sign Jarome Iginla, who inked a three-year contract with the Colorado Avalanche, as a result of their cap woes.
According to multiple sources, the Bruins are looking to shed some salary and Boychuk and his $3.366 million salary are on the block.
It's believed the Calgary Flames, Minnesota Wild and Colorado Avalanche are among the teams interested in Boychuk.
Boychuk, 30, has one-year left on his contract, and according to CapGeek.com, his limited no-trade clause expired on May 31.