NFL franchises are facing the possibility of a dramatic drop in revenues if games are played without fans in 2020.

League-wide national revenues make up between 70 percent and 80 percent of income for teams on average. For higher-revenue clubs such as the Dallas Cowboys, it is closer to 60-40 national to local if not even closer.

According to one team source, the NFL would lose the equivalent of $65 million of their nearly $200 million salary cap if all local revenues were removed.