As far as I can remember, the idea was initiated by the SL, where it was stated that Schiano wouldn't work for Herman, and I believe it was the opinion of everyone's favorite columnist.
Also, Barchi may be retiring soon and Herman has been unfairly portrayed as somewhat of a disaster, hence all the leaks of the admin not trusting Herman to make the hiring decision. Coaches prefer to attach their future to an AD who they think will be there a very long time, and it remains to be seen whether that will be the case for Herman.
Personally, I like the job that Julie is doing, but concede she has lots of critics, especially those that loved Pernetti, who seem most vocal.