What did Borges make up? I know others who were one to two degrees of separation from this situation that said Karaban really wasn't sure he was going to play another season of hoops. The impression I got from them is that Karaban may not want the life of an NBA nomad. I suspect the money of another year of college was too much to pass up and he can probably help his resume for his post basketball career, but I don't think it is a slam dunk that Karaban goes to the NBA to live off two way contracts for 3 to 5 years, playing in gyms in Portland, Maine and Grand Rapids, Michigan in front of crowds of dozens. If he is a certainty to be in the NBA at the end of next season, I think he goes to the NBA. If not, he may just move on with his life.
One of the benefits of getting paid in college is that players can build up a bit of a nest egg so they don't HAVE to play in G League or Europe just to make a little cash. If they don't want to play minor league hoops, they don't need to play minor league hoops.