I think he's guilty. He's always been very phoney, trying to be the next MJ when in reality he's not even one of the best 2 guards in the league and the league is shit right now. His parents don't even get along with him now, apparently and almost all of his teammates as a child hated him.
My point, no one really knows him. He puts on a good boy image, but it's just an image.
He lied about having sex with her, when they said they had evidence, he admitted he had sex with her. During the press conference, he had guilty written all over his face.
He'll probably just get community service, I doubt he serves any jail time.