I think Ishiba is exactly the kind of owner to see how Houston has leverage on him and just say " these guys" and not deal with them out of spite. If he could just find another owner who is stupid enough to think KD is the difference maker for them to take a next step, he can get enough back (in players, not picks) to retool around Booker and stay on the treadmill to over Houston and be just good enough to sell out the stadium every night.
Here are some fringe teams who might be see KD as someone who can take their franchise to a next level in the short run and might foolishly give up some long term upside for 2-3 years of KD. These are the kinds of teams that may not measure success in Championships (and honestly I'm kind of afraid we might become one of those teams) but instead just want to make the playoffs most years, sell out the stadium for a few extra games, and be an exciting pastime that the community adores.
Spotrac Trade Machine isn't yet set up for Off-Season mode, so I didn't form full packages but the moves below would be the hypothetical centerpiece of deals.
ORLANDO. This is the first team that comes to mind. And mind you, I think this would be a stupid trade by the Magic but I could see them doing it and selling to the fanbase the arrival of an all-time great star. Magic get KD, Suns get Franz. This isn't quite as bad as Luka for AD, but it's pretty close. You suggest something like this to anyone and they immediately think it's absurd, but when you think about it... can't you see ORL doing something like this? ORL has a lot of really good young talent, but they are constructed rather poorly. I'm not sure that Paolo and Franz are a great fit next to one another, and certainly not with Suggs as the 3rd cog in the machine.
ATLANTA. As we know, the Hawks have zero incentive to be bad in the short term, and they may instead have a heavy incentive to want to keep their face of the franchise happy so he'll extend. Hawks get KD, Suns get Jalen Johnson and Okongwu. Again, extremely short sighted, but I could see something like this happening. If the Hawks could pair this with using the SAC pick on someone like Malauch... now they've got a happy Trae and a Trae/Daniels/Risacher/Durant/Malauch starting 5 to try to make the playoffs with in a weak east.
MINNESOTA. The Wolves were rumored to be making a late push for KD at the deadline. Gobert + Dillingham for KD? This keeps PHX compe ive at least.
These are just a few examples. The bigger impediment to PHX's ability to stay compe ive is Beal IMO

PHX for ever taking him on