Yahoo! Sports reported on Monday night that Peyton Manning has hit a plateau in his recovery from neck surgery and might not be able to play football again, citing two sources. The vertebrae in Manning's neck have healed as expected, but the nerves in his arm aren't progressing enough to indicate that he will play again. The Yahoo! story also quoted two doctors with experience in spinal fusion surgery who said it could take up to one year before Manning will even know if he can return.