For discussion purposes, the Bruins need an LW. Kane is an LW. I don't care who said it, it could have been a poster suggesting it. It only matters if it comes to fruition, otherwise, it's all just forum chatter, which is the purpose of these boards.
Who are some names out there? Landeskog is one. Anyone else right now? Kane is a reasonable discussion, regardless of who said it.
Also, divisional trades happen these days, it's not common, but not unheard of. Kane isn't a big enough name at this stage to warrant worrying about trading in division, in my opinion.