From talking to University people today, it's my understanding that there is a 5 business day appeal window from the time you received the written documentation on the ruling. I think Alexis got that last Thursday.
Given the nature of the case and what the University and athletic department has gone through with the Title IX stuff, I think they will likely wait till that appeal window closes before announcing or doing anything in terms of Johnson returning to football.
That means, I would guess you are looking at the end of this week for a possible return.