Disagree. They could absolutely use/need his money in 25-26 & 26-27. An aggressive GM could use his money in 24-25 as well. And they will be getting close to the cap if they intend on making meaningful competitive upgrades to this roster.
I suppose someone could want his final three years for $4.5 at 50% retained, but even that is starting to feel iffy if his effort and involvement continues to be nonexistent.
A buyout this summer is a nonstarter imo. The cap hits from 24-25 to 29-30 are 1.4, 4.4, 6.4, 2.4, 2.4, 2.4.
The 6.4 three years from now is the sticking point. That's a massive number in a season we should be fully competitive. Plus we'd get the most cap savings next year, when we'd need them the least, and drag hits of 2.4 through the life of all the big deals we just signed. Doesn't add up to me.
The cap and more importantly the roster spot/role being unshackled from his drag could be worth attaching futures to him.