I know they'd have to do this right now because of Braun's poison-pill, but "NBA teams can begin trading immediately after their season ends."
Miami
The Heat get more of a lead guard (and a healthier one at this point) to build alongside Bam, without giving up draft capital. A Murray-Davion-Braun backcourt rotation with Bam and Ware inside is a lot more interesting than the team as currently stands.
Denver
The Nugs clear cap and extend their window for competition. Getting off Braun's contract is big. While losing Mal would be heartbreaking, Denver can live without a traditional point guard. Additionally, with Watson, AG, Cam, and Wiggins, the Nuggets would have the length and athleticism needed around Jokic.