BJ Boston is awful at defense and awful at shot creating. What makes you think he has Mikal Bridges potential on defense and Ingram potential on offense? I have a hard time seeing him as a 3&D prospect given that he's very bad at both, and I don't see him as a high ceiling player either. When players are this bad to begin with, it is exceedingly unlikely that they will even be good enough to play in the league. Turning into a star is out of the realm of possibilities.
He has the tools and the feel to be a solid 2-way player. He's a long way away though, and if he doesn't put in the work he'll be out of the league.