With Ja Morant's one game suspension due to his conduct, I see the heat as maybe the best situation for him to go to, He fits pretty well with Tyler in the backcourt and has a great supporting cast in Bam, Powell, Ware, Mitchell, JJJ, Jovic.
I didn't give the Grizzlies much because I don't think Ja has a very high value, and my guess is that unless they look to trade him now, they are going to end up in a situation where they wait to long, and end up trading him for hardly anything (Like I show here). Similar to the Heat-Jimmy situation.