This has only happened once or twice, but with more and more "super classes" it is becoming more common. When a new coach takes on a new school, allow the signings of walk-on that show on that team. I just took over a D1 program, and the BEST freshman on the team is a walkon who will be leaving the program.
As I said, not common, but this kid has solid numbers and potential. More then several of his classmates that are considered "recruits" and I will be forced to keep. The point being, for a Sim program, they are all the same and I should be able to offer him a scholarship.