Kenyon Martin broke his leg rather than tore his ACL. He was far and away the #1 in a shitty draft and was drafted #1 anyway.
All that got lost in my tangent on tattoos.
If I am not mistaken, John Collins, if he chose to return to Wake, can take out an insurance policy and Wake CAN pay the premiums for the year as long as Collins and Wake enter a contract for Collins to pay Wake back upon signing of his pro contract. This draft is so strong, it is an interesting choice. Stay in the draft and go anywhere from 15-30 or go through the process, come back to college and at the risk of a serious injury, try and improve your draft stock in what is projected to be a much weaker draft. He could also anticipate a year in which Wake would get a lot of exposure and he would be a media focus.