On paper appointing him makes sense for you. He did do an excellent job with us. You are in a worst state than we were mind. He doesn't do player power, which in the long run is exactly what you need but in the short term could destroy your season and send you down.
I would be quite surprised if he took it. In his own mind, when he left us i think he felt he had served his apprenticeship and was ready to manage at the highest level. He has also been spoiled working with Steve Gibson at a very stable club. You lot aren't and he will do his research.