There are teams that need physicality like the Red Wings. These are teams who lack an edge on the ice, which can keep them from success. However, there are teams that desire physicality. It does not matter whether they need an edge, they want players who are buzzsaws on the ice. The Boston Bruins fit in this latter category.
Cuylle fits what the Bruins love to do more than the vast majority of players. He will hit anything that moves and could score 50 points every season. Boston is headed toward a rebuild and could use young players to lead the way. Cuylle fits their potential timeline while having some untapped potential Boston may be able to unlock.
The Bruins have the financial means to bring him in. However, there is a complication at play. If they want to offer sheet him at the second-round pick threshold, they would need swing a trade for their original selection. In any event, the fit makes sense for both sides. – Clutchpoints