Now what?
The key is to do the rehab religiously. No excuses, no days off. Do it but don't overdo it. Patience is just as important.
I wish I could tell you things will go wonderfully, but the fact is you just won't know until you finish the process. All you can do is stick to the program and give yourself the best shot you can give yourself.
He will hopefully be able to play next year, but he will likely still not be 100%. If he is fortunate enough to return to 100%, it could be 2013 before he gets to show that in a college game.
I know that's discouraging, but that leaves him 3-4 years of college ball, which is all any of us get anyway. It's always sad when someone has to bear this cross, but the best you can tell him is, he's got a lot of company.