He's the teams 1st line center, on a fair contract. 26 or 27yrs old, what do you have against him? You give the impression that the Bruins and their fans have soured on him. That is far from the truth.
The Bruins are just fine with their roster as is. A few minor tweaks this season for depth. Next season, cap comes down, Chia will have his plate full.
Kane is a fantastic young player. While I am a Krejci fan, E.Kane holds a tad more value IMO. Boston would have to add. However I'm content with the top-6 as is in Boston. Cap coming down next season, will be difficult to keep all 6 in the loop.