Kanter is the worst defender in the world. No, thanks.
By what measure? I checked the "trailers" section of basketball-reference and he doesn't make any appearances in the list of 250 worst DRtgs. He did make one appearance, when he was a 21-year old in UTA, as the 161st worst Box Plus/Minus, but if you check that list, there are some pretty good players who had worse seasons, than that one season by Kanter.
On the positive side, he's one of the best offensive rebounders in NBA history. His career ORB% of 14.1 is higher than any other active player. Over the last 2.5 seasons in OKC he has posted PER = 24.9, 24.0 and 23.7, TS% of .611, .626 and .599, ORB% of 14.9, 16.7 and 14.1.
He's not perfect (obviously), but he'd be a good fit next to Nurk and would give us some much needed size up front and improve our rebounding. He also makes less than Allen Crabbe and has fewer years on his contract. He is locked up for 2017-18 and has a player option for 2018-19. I'd trade either Crabbe or Turner for him in a hearbeat. I'd also trade Meyers plus Aminu or Davis for him.
Age wise, even though he's been in the league a while, he's younger than Crabbe and Meyers. He turns 25 later this month. So, he'd fit in with our core.
Worst case, he's not a great fit and opts out next summer, just in time to clear his salary off the books for Nurk's big extension.
BNM