They should just cancel the season for everyone, keep the players on campus, in a controlled environment, where they have the medical facilities to handle this and let them just continue to do off season workouts, right through to next fall camp, to keep them in shape. Any of those that declare, they get taken in by the team that drafts them, to an immediate off season camp, for the same thing, workouts and medical observation. If they do not get drafted, they can stay with the school until they have a vaccine in play. Those may lose their eligibility but should not be thrown to the wolves at that point. The NCAA and NFL should approve all of this, without hesitation.