The Boston Bruins are in desperate need of a top-4 defenseman. With the regular season approaching, the rumors of Cody Franson, Marek Zidlicky, and the newest addition to the Los Angeles Kings roster Christian Ehrhoff, signing with Boston are now appearing to be just that; rumors. The Bruins may need to turn their attention to the trade market, and while acquiring a legitimate top-4 defenseman may not be easy or cheap, the Bruins should leave no stone unturned when looking for one. With that being said, one team the Bruins could work a trade with is the Nashville Predators.