Jimmy Butler has added Phoenix to his list of teams. The only possibility I can see is Devin Booker. This is an unfair trade given Booker is just entering his prime and is a top level player. However ... the team would fit together much better with Jimmy than with Booker.
G: T Jones, M Morris
G: Beal, Grayson Allen
F: J Butler, Okogie, Ryan Dunn
F: Durant, O'Neale
C: Nurkic, Plumlee
Jimmy would be a major upgrade to their defense & toughness. Phoenix has looked lousy without Durant largely because their forwards have struggled. Booker and Beal overlap with one another far more than Beal & Butler do. It would be a smoother fit.
I wonder if Miami could make that work by including further assets to make it more interesting to Phoenix. A Herro & Booker starting backcourt with Bam at center. That is a nice trio to start retooling your team around.