I've actually heard Mark decided to leave on his own and Xavier was trying to persuade him to stay. We will never know the true story.
I think Iona would be a nice fit for Lyons. He'd probably averaged 20 a game with the way they play, but I could also see him landing at Arizona or St. Johns too.
I don't know how true it is but I've also seen that Mark and Dez were pretty close, and if Mark left, Dez would heavily consider leaving as well. Don't know if it's true or not but it could get interesting.
Anyways Xavier will be pretty damn bad next year regardless. If Wells stays, their returning players only combined for 26 PPG last year.