He can be traded tomorrow. EDIT: Scratch that, he can't be traded this year at all because of the salary increase. March 3rd is the earliest and that's past the deadline.
I think RoCo will be much more in demand than Nurk. Every team that thinks it's a contender can use RoCo.
I don't think contenders would be interested in Ant/Little ahead of Nance and Powell. And I was mostly thinking of win-now teams, as I doubt Portland will be looking for win-now trades with teams that are rebuilding. Also, I think Ant, while a decent young player, is heavily overrated on this forum. Little I agree would be in pretty high demand if Portland offered him up. But yeah, I didn't realize Powell was untradeable for this season.
Most contenders don't have 12 million in dead salary to move for RoCo. I went down the list and outside of Chicago I find it hard to see a market.
Part of the reason we like him is that he's a cheap replacement for CJ, so people think we can just ditch CJ for nothing and have Ant step in and provide a better (not me saying this) version. Happy to educate you.