As to the MIA offer, as reported:
Herro, Ware, Jaquez, 2026 1st, 2 future firsts
First, this doesn't even work in terms of salary matching. MIA has to include $3.7M more and then it is a 4 for 1 trade. MIA has to fill up their roster after. I see Ware as a decent prospect. Herro I see being flipped so it is a projection of what you can get for him in terms of young players and picks, which may not be much ($33M is a big contract to trade). The picks are good not great, probably get you middle class players like Ware. The fit for Giannis with what is left in MIA is poor.
Compare this to say Brown, or what MIL could get for Brown in a 3-way or a separate trade. POR makes the most sense as the 3rd team but ATL could offer a decent package also. If BOS has in fact made an offer to MIL, it is probably a deal favorable to BOS, but less than what MIL would ultimately take.