I just believe Kessler's side is probably the side being most set in their position because the market just dictates that. The list of free agent centers is pretty trash next year. It's Kessler/Duren/Williams, and that's it if you want a starting caliber 5 and Williams hardly qualifies with his injury history.
Nick Richards, Robert Williams, Zach Collins, Moritz Wagner, DeAndre Ayton are kind of the next, but they are all backups. Hell if Nurkic has a good year he might be in demand as a slightly more than the minimum type of player.
Always a risk because one of the teams with space and a need for a 5 are the Lakers, and they can always go star chasing and not have the money for Kessler. Charlotte is the other team. Maybe they draft a big in the 2026 draft or decide they dont want to max a 5 when they have to pay Miller the next season.