I've always been on the "Boogie-To-Boston" train and would LOVE to have him here. I've also been on numerous Cousins threads like "The Boogie Watch" for example voicing my interest in having him here.
I'm afraid Cousins is likely untouchable though for the following reasons.
1. Kings are currently the 8th seed in the West. The Blazers have shocked everybody by being really bad lately.. and as a result the 8th seed in the West is WIDE OPEN. Even the Mavericks have a shot at getting it if they go on a bit of a run sometime soon. The Kings have the new arena and Cousins is their only bright spot right now. Add in the possibility of making the playoffs, even as an 8 seed, and I fail to see why the Kings FO would deal him at the deadline. They've already held on to him this long..
2. Carmichael Dave, a Kings reporter, believes there's a GREAT likelihood that the Kings would offer Cousins the "super-max" contract (thanks to the new CBA) before even thinking about trading him. I also think the Kings would offer Cousins the extension, and I think he accepts, because...
3. Cousins also hasn't voiced his displeasure about being with Sacramento explicitly yet. Yes, he's been in some scandals and looked frustrated, but he seems loyal to the city and loves Sacramento as well. Plus, his new contract would have a ton of $$ (hard to turn down - just ask Carmelo Anthony).
So while I would love Cousins, I think it's a waste of time now imagining him being here. I don't think Ainge and Stevens want him here either for other reasons, and especially at the likely price to acquire him (very risky). There will be a ton of rumors in the coming months, but I would take them with a grain of salt.