Pretty sure JC advised Charlie V to stay. Guy got drafted 7th and made a huge contract. If he had listened to JC, he maybe moves up a couple spots the next year. Savvy of him to go when he did.
Re: Boone - The fact is, Boone didn't want to be at UConn anymore. I consider Boone to be a prime example of JC losing touch with the kids. How many players before Boone actually took a big step backwards in their Junior year at UConn? None that I can remember. Guy dropped in all categories, and appeared to not have any fun whatsoever in that last year.
He ended up going 23 and lasting for 4 years in the NBA. Would he have done better if he stayed at UConn one more year? I doubt it. Boone had heart, but it was mostly sapped in that last year.
I know a bunch of folks differ on this point, but I don't think the college head coach is a great source for determining whether you should go pro. Fact is, there is a huge conflict of interest and I don't think there are many men out there, no matter how fair in their dealings with others, are sagacious enough to put aside all of their own bias when rendering advice to a kid who could be the difference between national championship and not the next year.
Fact is, JC encouraged CV to stay, and if CV had stayed, there is a great chance that 06 ends up being the third RING for JC. Charlie had 14/8/2BL in his sophomore year (in 25 minutes per game!!!), could shoot from deep, was an excellent defender, and would have been just a beast as a Junior.
I know that's not popular, but that's the way it is.