BOS is likely the only realistic trading partner & I believe DA would be willing to give up a considerable haul as Gobert would make them a legitimate championship contender IMO.
I know financials would have to be worked out but something along the lines of Brown/Tatum, Zizic, Rozier, BKN 1st, LAL/SAC 1st in addition to Exum/Mitchell/Hood + acquired assets from Rubio/Ingles/JJ/Favors + our own likely high pick(s) is a great starting point for a rebuild.
I have no doubt that Gobert is a legitimate championship caliber superstar. Just that we can compete without at least one more impact player (probably really 2) & that Mitchell, Hood, Exum, future (likely) mid-1st rd picks, & future FA additions will be enough to get to that point.
I understand the likelihood/certainty that not every prospect will pan out & the almost certain fact that we will not acquire a player of Rudy's caliber in return, but I do think (with the right haul) that the sum of The acquired assets could potentially outweigh the impact of any single player (considering the state of the league).
As rare of a talent as Gobert is, even LBJ needs significant support. I see no potential Irving/Love level of combined talent currently on this roster (outside of Rudy & maybe Mitchell...way too early), which wasn't even enough for LBJ to challenge GSW this year. Obviously the landscape of the league will change over time, but I don't see the trend of elite talent teaming up going away anytime soon. If anything, I think it's more likely to increase.