jon - Thats a great question and I think you'll get a variety of answers. It is my understanding that various college coaches handle the situation differently.
Our son's college was a top-25 school with lots of scouts regularly at games. The very top players had "advisors" who could ultimately become their agent if they signed after being drafted. Through these "advisors," players could get a feel for where they stood in the upcoming draft. There have been lots of threads on this and I suspect this thread will address this aspect as it gets rolling.
Additionally, at our sons's college...towards the end of the season scouts would make "appointments" with players they had interest in through the baseball office at the school. Players would be notified something like, 'After practice on Tuesday, scouts from the following teams will be at the stadium to talk with you.' Different teams would come on different days.
My son tells me that he would basically sit and talk with the scouts for anywhere from 10 minutes to maybe an hour. They would discuss his signability, collect information (e.g. cell phone number) and other aspects the scouts might be interested in (e.g. any health issues or remaining credits to earn degree, etc...).
In the days or day before and/or during the draft, it would be normal to get a call from a scout as a team began to get close to drafting a player..."Are you sure you'll sign for ?? if we draft you?" or any other last second questions.
Lastly, I don't mean to try and read too much into your question(s), but one comment caught my eye:
quote:
...His college coaches have been putting the notion in his head that he will be drafted next year and they will miss him for his senior year, but he needs to do it...
This could mean a lot of different things or maybe nothing? They may be motivating him. They may be excited for him. But they also may be telegraphing to him that they expect him to leave...that is, they won't have scholarship money for him if he returns. Not trying to scare you...but he might want to go back and discuss the whole thing further.
For what its worth, all scenarios above have happened to kids I know. In our son's case, he knew exactly where he stood with scholarship issues, role within his team if he returned and pretty much everything else, directly from his coaches, BEFORE the draft occurred. Because of this (and other factors), he returned for his senior year and had the time of his life.
Good luck!