Might be able to do a sign-and-swap with Whiteside (tell the truth, you were thinking Jerome Whitehead). If somebody wants a big and has a wing/stretch 4 to send in the other direction, that might do the trick.
The can let Whiteside, Melo and Ariza walk and be slightly under $100M. They also have about $11M in trade exceptions. It would take creativity and I'm not sure that's really Olshey's strength, but maybe he'll get drunk on a Zoom call with Daryl Morey, who'll start randomly generating trade ideas.