As someone who is an experienced filmmaker, as well as a former UConn basketball sports writer with media access who knows the people you would need to speak with, I'd like to give you my best advice. Hopefully it doesn't come across harsh, I just want to be honest with you.
You are off to a bad start. You need to go through the proper channels, regardless of any connection (and you can be sure no one here with a real connection and any sanity is going to hook up, or vouch for, a stranger online and connect them with the higher ups in the athletic department). As a filmmaker your friend should certainly know how, and to whom, he needs to pitch his documentary idea. Coming here for info and contacts just isn't a good start. It's pretty simple to find the proper contact information online.
Seriously, your chances are incredibly slim anyway, but you better absolutely come correct or you have zero chance. Don't waste anyone's time if you don't have an impressive film resume, top of the line equipment, and a professional editing studio at your disposal. The guy who just did Calhoun's documentary is a serious award winning film producer. This is a cream of the crop program (generating millions of dollars per year) with a reputation to uphold. There are very, very, few people that they would authorize to use footage, conduct interviews, and create a documentary on the program.
I have a pretty decent film resume. I also spent several years as a sports writer with media access covering the UConn men's basketball team. I know the proper people to speak with to really get the ball rolling and they know and trust me 100% as far as my integrity in a project like that goes. My guess at my chance of getting approval for something like this? Zero. If I brought a friend of mine into the project who is an award winning documentary filmmaker, I would put our chances at very, very, very slim.
Not trying to be a downer, just want to make sure you are being realistic and understand the magnitude of something like this. Best of luck.