A suggestion I read somewhere, one of the NFL reporters most likely, was to clean and check the team facility. Then test the players before allowing them to use the facility followed by a quarantine at the facility of the players with further testing as necessary. It wouldn't be convenient to say the least but it sounds feasible and would allow the team members to get acclimated to one another on the playing field. I'm sure there are other ideas like this floating around the NFL right now.