I disagree. I think you will see the difference a QB can and will make this season with Casey being better that Adrian.
He may not come here, but I would argue that a QB of his level can make up a lot of ground in the Win loss column.
I would also argue that if he was able to take Nebraska to new heights that we have not seen in the last 20 years that would do more for his future growth than just continuing the success that a program already has.