<p>Sorry I can not reply to your PM because I have fewer than 15 posts. S has withdrawn from UIUC for spring 2013. We are carefully communicating because he says he wants to return for fall 2013. We have not heard back yet from UIUC Eng, probably due to the holidays. I think this should be similar to what students on internships do (that they don’t need to reapply). We will see. We urge S to ask advice from UIUC registrar and Eng to learn the best steps to take.</p>