If I am Milan, I am not sure I want to go someplace like Kentucky where there a bunch of "me me me" players and a okay but not good or great coach - and then try to build on the year he just had at ISU.
If he comes back and it isn't ISU it better be someplace like St Johns, UCONN (gag) or Duke where the coach actually knows how to build a team and develop talent.
Even then, the likelihood of him putting up a year that raises his stock over what he did this year is pretty low - and that is not a knock on Milan - he was just setup perfectly this year with the type of talent and system he had to play in.