It has been highly speculated that the Boston Bruins are looking to add a right handed shot defenseman to their top four. In order to do this, they will need to acquire more cap space by trading away the contracts of Dennis Seidenberg and/or Chris Kelly.
Since there are many teams, other than Boston, who are also in conversations with these defensive free agents, it seems unlikely that a team would trade away assets of their own for Seidenberg’s contract of $4 million dollars a year when they can just sign a free agent defenseman for roughly the same amount.