The Buyout of Shea Weber, I believe that his injury this year, could be his last. Meaning his injured to
to end his career. So make room for salary cap and possible another signing for the Canadiens to a little
improve the team for the future. So signing Chiasson and Donato can help 4th line for the Canadiens, but
it won't make a major impact but it can help along the way to win some game, to prevent being at the bottom
of the standing. Also resigning Ryan Poehling and putting him on taxi squad. That is about it.

Habs dont need to go rebuild, and they dont need to sign more 4th liners when they already have some

You don't need to buyout Weber.
If he retires (so he doesn't have to deal with the hassle of evaluations and such for league policies), it would cost the Habs somewhere around $500k due to recapture.
If he stays on LTIR, we're still able to use that cap space.

The Habs don't need 4th line help and are just coming off a finals appearance. It makes more sense to try to follow that up at least once, than to rebuild. Especially considering the players we've been signing to deals with term.

Many of these moves are questionable, but the one that leaps out at me is the idea that signing Alex Chiasson at almost three times the cap hit of Cole Caufield makes sense.