Green doesn't fit the Suns timeline and I'm not giving the Warriors anything good for him.
I don't see the Warriors wanting to trade him anyway.
I'm not sure the cost, but most of our commodities at this point are "commodities". I could part with all these parts that don't win us anything for someone that's been productive.
Steph and Klay will cost a fortune to keep (minus $30M because Klay got screwed). There is still the slightest possibility that KD stays. They may be forced to trade Green which could drive down the cost.
(As for the timeline that you suggest, that would mean Jrue would be out of the discussion as well. I could be wrong, but I'd bet that James Jones isn't considering limiting himself for a hypothetical timeline.)
Again, the dude drives me nuts, but so did Danny Ainge. And I eventually grew to love him. Right now Draymond sits comfortably behind Mario Elie and Greg Anthony as my most hated player. At least Draymond is ACTUALLY a good player.