With only 8 Saturday night slots, I doubt we have too much to worry about. There's 30 all top 6 games a season to choose from before attention turns to anyone else.
This was news like 3 weeks ago.
http://www.independent.co.uk/sport/football/premier-league/saturday-night-premier-league-games-expected-from-2019-new-tv-deal-a8061206.html