Coach Shondell has said multiple times that you do not really get good at blocking (which has been so critical for this team) until you have played 3 or 4 years. I suspect he would very gladly take Johnson back. The same with Grace Cleveland... in the video I posted above he said "Is there any better outside hitter in the country than Grace Cleveland?" and the others on the panel agreed.
As for Bush, I have to believe after her twitter announcement, that she is not coming back. She red-shirted one year so she has already been at Purdue 5 years. So it is probably time to move on. I am sure we will miss her but I have been impressed with Megan Renner (Red-shirt sophomore, 6'1") when Dave has put her in games where Bush was a little off. He speaks highly of her. And her added height over Bush will be an plus as sometimes Bush was taken advantage of due to her 5'10" height - although she can sure jump.
If some of the lower classmen who have been waiting leave, it is kind of unavoidable. I am sure many other teams are facing that same dilemma.
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