Herro has been rumored in trades for like 3 years now and it seems no one wants him. Jrue, Lillard, etc. it seems the other teams just don't want Herro and they end up trading with other teams not Miami.
I doubt MIL wants Herro, so they'll try to redirect him to a third team. Although, if you're MIL, you're fine trading Giannis for basically Ware, Jacquez, Jovic and maybe 2-3 FRPs? It's not terrible but feels very meh. And keep in mind, the third team in the trade who acquires Herro probably still isn't giving up a tremendous amount either for him, maybe a future FRP or multiple 2nds and a player?
Here's an interesting thing as a bit of a social media guy myself. My Grizzlies friend told me yesterday Herro's brother replied to a random IG comment asking him (Tyler Herro) to "come to Orlando" with a GIF of a Grizzly bear. AKA, Memphis Grizzlies? Maybe it's a MIA-MIL-MEM 3-team deal with Giannis to Miami and Herro goes to Memphis? How do we think that framework looks like.