I think you're right. A few guys that would qualify (and remaining salary/years):
Harrison Barnes (22.2, 20.3, 18.4): Only if Sac starts to tank since he's been great this year and would obviously cost a lot but has reasonable, declining contract that would be attractive.
Aaron Gordon (18.1, 16.4): Not likely since Orlando is playing pretty well but would fit the profile. Like Barnes, would cost a lot.
Bogdan Bogdanovic (18, 18, 18, 18): Not sure when he can be traded and is currently out a while but ATL appears to have a glut at the wing position so maybe they would entertain.
Dejounte Murray (14.3, 15.4, 16.6, 17.7): Spurs not likely to tank and Kemba seeming on track to return so this one is probably a non-starter but would fit the profile.
Cedi Osman (8.8, 8.1, 7.4, 6.6): Wouldn't be that exciting and is shooting like crap so far but is normally a decent player and his contract declines over time.
Truthfully, I don't see a whole lot of realistic options at this point.