If he doesn't have a two way contract then he needs to listen to his agent or an advisor and head to Europe or the Asian leagues where he could make high 6 figures to low 7 figures in one of these leagues because two 10 day contracts plus a standard G league contract isn't close to what he could make in these leagues.
It's obvious the league views him as a AAA level talent. People have done this in baseball and hockey too.
What’s puzzling here is why the NBA is showcasing a player they’re clearly blackballing during the biggest weekend of the year. A lot more people know who he is now as a two-time defending dunk contest champion. Some might get curios and check out his G-League numbers and start wondering why he’s not on an NBA roster. If you want to truly memory-hole someone, this is not how you do it, so I’m not sure what the agenda is.
His game is best suited for this league. He can easily average 12-15ppg, 5-6 apg, either start for most teams or lead a second unit. No disrespect to guys like TJ McConnell, Colin Gillespie, or Ryan Arcidiacono, white PGs who are similar in size to McClung, but nowhere near as athletic. Mac is simply a better player than all of them, if they can find a spot on an NBA roster, so should he.
I agree he should look elsewhere instead of rotting in the G-League waiting for a chance that won’t come. You can make good money in the Euroleague, I’m just not sure if his game is best suited there. But if he gets some guaranteed money as you mention, he should take it before it’s too late. Lots of competion over there as well and now would be a good time with his name recognition at an all-time high.