If some football games are actually played, the people at most risk are not the fans but the players, coaches, trainers. I see no reason why UTEP can't allow 10-15k fans in the stands. Family groups sitting together, some spreading between groups, open air stadium, require masks. Much safer in those stands than in those locker rooms, huddles and lines of scrimmage.
A typical UTEP football game, but now you just have to wear a mask.