Bruins' Blue Line Puzzle: What's Boston's Next Defensive Move?

The Boston Bruins have already made moves this offseason, but their depth chart on defense still has question marks that need answering before the season starts. The team's front office is clearly still evaluating options to solidify the back end, and the next transaction could define how competitive this roster truly is. With the salary cap landscape constantly shifting, Boston's next move on defense will reveal whether they're building for a Cup run or settling for incremental improvement.