Swayman, the former UMaine goalie, is a restricted free agent so other teams can make him an offer, which the Bruins will have the chance to match.

The Boston defenseman made a good impression, especially in the playoffs, and is looking to build on that in the upcoming season.

Sirott, the Bruins radio play-by-play announcer for the past seven seasons, takes over after Edwards stepped away after 19 seasons.

Zadorov, signed a six-year deal with the Bruins, brings physicality and swagger.

Swayman, the top goalie in Boston after Linus Ullmark was traded to Ottawa, went through arbitration last year and said, ‘I don’t want to do it ever again.’

Dean Letourneau will play for Boston College next winter, but the 6-foot-7 center got a good taste of playing at the top level.

Signed out of Providence College in the spring, Duran got his first taste at the pro level with the Providence Bruins.

Commentary: Boston picked up the best center available, but still has work to do with the bottom six forwards and a long-term plan for a backup goalie.

Matt Poitras, a surprise contributor for Boston last season, which was cut short by a shoulder injury that required surgery.

Just watching Nikita Zadorov – at 6-foot-6 and 248 pounds – will sell most Bruins fans on the free-agent defenseman.