I was sold on Noel as the number 1 guy in the draft but this changes things for me. There is no telling how he will come back form the injury. Its good that he is young but his game is based on being a great athlete. At minimum this is going to slow the development of a guy who still needed to develop in quite a few areas. Even if if he comes back healthy he could injure it again. Look at Thomas Davis. Noel isn't a number one prospect if he can no longer jump out the gym. This also creates a chance he may not come out this year.
Also latest mock I saw has Shabazz at number 5 behind Noel, McLemore, Bennett and Marcus Smart. That was from Chad Ford on ESPN, obviously before the Noel injury.