You could interpret his comments in the article linked below to indicate that he thinks it's likely he will have to cancel college and high school football in the state.
Considering MU would normally be playing South Carolina, it appears this yet another indication of how in doubt the college football season is.
https://www.usatoday.com/story/sports/college/2020/07/02/south-carolina-governor-mcmaster-may-not-allow-college-football-covid/5365235002/