Collins might be an NBA player one day, but I don't think there is anyway he would leave after this year. His game is still incomplete, and he has been way too inconsistent. His size is a problem in the NBA. at 6'8" (probably closer to 6'7" if you ask me) he is going to have a lot of problems with PFs. He needs to get stronger, and really work on his shooting before he is ready to make the leap. I think we have him for 4 years, and then I think he has a MONSTER senior season is drafted in the top 10, much like a Kris Dunn. He will still only be 21 years old when he graduates from college, and will actually be younger than a guy like Bacon (FSU) who is already almost 22 years old as a sophomore.
Thomas was 6'7". Collins is a legit 6'9" with long arms and good hops. When he develops a consistent 15 foot jumper, he will be NBA ready.