It's not going to happen unless Cousins makes himself so toxic that we might not want him anyway.
To my eyes, that's almost impossible.
Cousins has been surrounded by such a giant mess in Sacramento for so long that until he leaves the Kings I (and I think most people) will always wonder about what could have been with a change of scenery to anything resembling a proper team / staff.
He's have to go way, way off the deep end (I'm talking Gilbert Arenas style - bringing guns in locker rooms etc) for me to not want to take a shot at him.
If you look at the list of bigs who have put numbers close to cousins at the age of 24, you'll find he's is in some seriously elite company:
* Demarcus Cousins: 24 / 13 / 3
* Tim Duncan: 22 / 12 /3
* Kevin Garnett: 22 / 11 / 5
* Shaquille Oneal: 26 / 12 / 3
* David Robinson: 24 / 12 / 4
* Hakeem Olajuwon: 23 / 11 / 3
* Dwight Howard: 19 / 14 / 2
* Chris Webber: 22 / 10 / 4
* Charles Barkley: 28 / 12 / 3
* Karl Malone: 28 / 12 / 2
* Dirk Nowitzki: 25 / 10 / 3
* Kevin Love: 18 / 14 / 2
* Patrick Ewing: 22 / 9 / 2
* Chris Bosh: 22 / 10 / 2
Also pretty much ever guy on that list was playing upwards of 38 MPG to produce those numbers, while Cousins only averaged 34 MPG. Adjust the numbers on a Per-36 basis and it's even more impressive:
* Demarcus Cousins: 25 / 13 / 4
* Tim Duncan: 20 / 11 / 3
* Kevin Garnett: 20 / 10 / 5
* Shaquille Oneal: 25 / 12 / 3
* David Robinson: 24 / 12 / 2
* Hakeem Olajuwon: 23 / 11 / 3
* Dwight Howard: 19 / 14 / 2
* Chris Webber: 20 / 9 / 3
* Charles Barkley: 26 / 11 / 3
* Karl Malone: 26 / 11 / 2
* Dirk Nowitzki: 23 / 9 / 3
* Kevin Love: 19 / 15 / 2
* Patrick Ewing: 22 / 9 / 2
* Chris Bosh: 22 / 10 / 2
This is basically a list of all the absolute greatest big men to play the game in the modern era (the past 20 years or so) and objectively speaking you'd have to say that Cousins' numbers are the best on that list.
To be fair i've not included steals and blocks, so if you include those it will tip the favor towards Shaq, Robinson and Hakeem - but to even be on the same page as those guys is nothing short of mind-blowing.
He is well and truly on track becoming one of the greatest big men to ever play the game.