I'm not saying anything definitive wrt Prince but, I've heard he is struggling. Obviously, there is a lot more to playing than athleticism. The list of players at ND who have fallen into this category is long.
If he's been passed on the depth chart by sophomores and freshman (or less athletically gifted Seniors), that should tell you all you need to know. As far as the Seniors go, JD was very good last year. Kiser was just ok and Marist disappointed. Although it sounds like Marist is (seemingly) putting it together this Spring.