IMHO, Boston says, "No", because Brown is a much more valuable player right now and arguably still has just as much if not more "potential". Boston wants to make the playoffs this year and they are going to get much more towards that out of Brown than they are likely to get out of a guy who, while he has upside, is in many ways more raw than The TimeLord.
And, imho, Orlando says, "No", because from what I can tell even though they have bought-in on Vucevic, they still think very highly of Bamba's potential and the fact is he still has three years on his rookie deal left (as opposed to Jaylen, who will need to get paid next year). Also don't overlook the fact that the Magic have paid the max on one of their players before only to end up trading him later that same year (Harris) so they may or may not be going long on Vucevic.
A more logical trade might actually be Langford for Bamba, as that exchanges two more similar contract horizons while still addressing the positional wants of each roster, albeit pretty much entirely via "potential". Both are early in their deals. Both were drafted well below where originally thought to be. Both have minor injury questions and high potential. Neither is likely to be a significant contributor to a contending rotation for at least a year or two.
Any trade for a 5 has to also probably send out one of our current 5s, though.