Folks, don't worry too much about his financial future. No way he didn't have an insurance policy, and though a slip in draft position could cost him $millions, he is going to collect $millions upon $millions anyway through the policy and whatever contract he does get.
As I understand it, these policies typically pay out the difference between what he was likely to make at his projected spot and where he ends up after the injury. If injury is severe enough to not be able to ever play again, it would pay out $millions. Unless this young man gets just plain stupid with his money, or lets someone take advantage of him, he and his family are set for life financially regardless of what effect the injury has on his draft status.
How worried would you be if it happened to you and you collected several $million at the ripe old age of 21? Might be upset you didn't get to play or play at your best in the NFL, but money should not be a problem for him ever again.