If he goes to PSU, he isn't going to play. He's not as good as the guy they got coming back. I really respect Wimbush but he should stay at ND and try another position much like Arnez Battle. He's likely to transfer and end up like Malik Zaier.
somewhere where he is 99.9% likely to start. The backup QB that took over at UCF is not bad. It isn't a given Wimbush will beat him out. As mentioned, PSU has many QBs and coaches don't want to bring someone in over the top of the others unless they are in extremely bad shape. At minimum he will cause them to lose 1 or 2 of the other QBs and he will only be a starter max one season.
Until they fired Paul Johnson.
Yes, he "retired" but he had years left on his contract and the natives were getting restless.