Hmmmmm. This would mean nobody, right? Apart from known/speculated such as Gabe Miller to medical, or Mauro Bondi. He did reference "3 specialists scholarships"; Bondi would mean 4.
On Mav's 2015 scholarship distribution he has us at 88. So if Bondi is one then there are two others that either left or are walkons that never actually went on scholarship.
Ohhh. I see now from his post in the Husker Football forum. I don't know, but you're right: must be at least 2 more that have happened, but aren't known.