To be honest, I haven't read about it recently. I read the SI article when it was released a year or two ago. Haven't thought much about it since. But IIRC (I may not be recalling correctly), he never actually "admitted" to doing it. He plead guilty because he was 15 years old and that is what his parents and his attorney told him to do. As a part of pleading guilty, he was forced to write some sort of letter of apology that people have since said was a confession, he said he was forced to write it. IIRC, he has stated that he only plead guilty, in addition to being advised to do such by his attorney and parents, because he was told this would be expunged from his record when he turned 18 if he completed some type of rehab, which IIRC, he did, and that he'd be able to move on with his life.
I don't sit on any particular side. If he did what he is accused of doing, its beyond fucked up. As others have said, he's lucky he was a minor or he'd be jail and maybe not even alive. But since this went down, he's done what he's been told to do. All his college teammates speak very highly of him. IIRC, he's made some sort of amends with his brother (father of the girl). It was supposed to be expunged from his record and the only reason it is public is a clerical error and the fact that some journalist found something that wasn't supposed to legally be there when doing some digging. I am not of the belief the major league baseball is only for people of moral superiority. I don't think the kid should never be allowed to work a day in his life over something he was accused of doing when he was 15. I completely understand why teams haven't touched him with a 15 foot pole. I wouldn't want my team to do so. But I do think at some point, somehow, he will be given a chance, and that chance will probably be full of conditions as it should be.