June 30, 2019, 11:23 pmDerrick Jones Jr.SF, Miami Heat
Jared Weiss has reported that the Heat do not want to give up Derrick Jones to the Mavs as part of the sign-and-trade deal that facilitates their landing Jimmy Butler.
The Mavs only agreed to join in the trade to help make the math work under the assumption that they would be getting both Jones and Kelly Olynyk out of this deal. If the Mavs pull out, the Heat will need to find another trade partner and possibly ship off Goran Dragic to make the numbers work out.
Source: Jared Weiss on Twitter