The "character" references among media are over-hyped. The young man did a few things that were stupid, but they are not uncommon actions among early 20 year olds, high-profile or not. That said, no team wants another Manzell and the trepidation is understandable. However, Mayfield is no J.M.
I hope he does play with a chip on his shoulder as he did in college. That is what led him to the Heisman.