I think Arnett was going to seek a hardship waiver because Dooley wouldn't release him to MSU. Then, when Dooley decided to release him, he was cleared to play immediately without the waiver. Pretty sure that's correct, which means, if Saban releases him, then he can go to any D1 school except in the SEC (unless Saban puts a restriction on other schools, like FSU for example).
Thanks for the response! I actually didn't know that.
