I like this kid chances as a change of pace back. He is built more solidly than Dunbar so he should be more capable as a blocker. He has elite game-breaking type speed. He also is a decent receiver as far as I can tell which is also a must for any 3rd down back. He also sounds like he is mature, hardworking and a RKG.
I like Lawrence's chances of making the roster over Dunbar.