If Bouk were my son, I would advise him to declare. The $ will probably be there, and the risk of a career-ending injury next college season does not warrant waiting. Nonetheless, I do not believe he will be a lottery pick, and predict he will fall into the latter half (16+) of the first round. If I were an NBA general manager I'd be wary of his outside shooting, propensity to dribble into the "trees", body strength and defense. If the powers-to-be think he will fall into the second (non-guaranteed contracts) round, that changes everything.
All the more reasons why, if he's offered first round $ now...................take it.
FYI, I am NOT assessing this as a UConn fan, or graduate (1974). James must do what is in his best interest, not mine, or yours.