Granting the additional year of eligibility is not an issue really...that is easy to do...it already happened with spring athletes...the issue is that schools do not have the means by which to honor it in some (many when it comes to football likely) cases, and, it definitely affects/impacts recruiting as well.
The extra year of eligibility will not be an issue for the better/best players, in fact, cancelling this season benefits them and works against schools.
Something that was amusing to me...imagine if Sindelar had returned this year...and then got ANOTHER year of eligibility because of what has happened! He might have had the longest collegiate playing career of any athlete in history.