DAVE CAMPBELL AP Pro Football Writer -- NFL training camps are scheduled to start before the end of the month, and owners and players have a lot of virus-related protocols to establish for this precarious season to kick off.

One important issue to be resolved between the league and the NFL Players Association is an opt-out clause for choosing to sit out over individual or family health concerns. Major League Baseball, with a player pool less half the size of the NFL's, has already had a dozen or so players opt out.

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