i just went through this same thing back in 2005.It dont work like that.He has to get a bus ticket through his Prison (let em know ahead of time he needs it) to send him to CA.But before he goes he will have to go see his local P.O in mich. to get all the paper work to leave mich. & move back to ca where he is from.It does cost to get it all dont but usually it is only like $50-$150. But if CA refuses him he will have to move to mich. to do his probation or parole what ever he will be on.As fart as i know there is no stipulations unless it is parole he is doin after he is released.If that be the case,yes he will have to have a address (home) to go to & his P.O will go check it out before he gets out.If it is probation he is gettin out on he should beable to get that transfered to CA.
Good luck to you both.