As someone who follows Marquette basketball fairly closely, Deonte Burton had very high expectations from MU fans after showing flashes in limited minutes as a freshman. I think the combination of losing his mom to cancer right before the season started and a new coach with a different vision for the team than the one was he was recruited to has lead to his decision to leave MU. That said he would be a steal for Loyola as he will probably end up in Big 5 school, maybe Iowa State. The following dunk is really all you need to see to understand why so many people are very high on him.
https://www.youtube.com/watch?v=8kuIm86iAv0