The Boston Bruins and Calgary Flames have been down this road before. Rasmus Andersson's trade to Boston was nearly signed, sealed, and delivered, but the lack of a long-term extension scared Don Sweeney away from Calgary's asking price. It was a fair decision for the Bruins' general manager to make at the time, but the Flames have another right-shot defenseman in MacKenzie Weegar who could fit their needs.
Weegar already has an extension in place until the end of the 2030-31 season, which checks that box for the Bruins' front office. His cap hit is also a much more manageable $6.