Off the waivers? Sure, depending on who you have to drop for him. The hamstring is still nagging him but if he ever recovers he'll put up good numbers.
I have Alex Smith just sitting there, haven't played him and McNair is my main backup, so nothing that would be a huge loss.
Well....yeah he's a way better prospect then Alex Smith. What the heck are you doing with Alex Smith anyways? There have to be a dozen better options available then Alex Smith, including some at QB.