President Trump has tweeted and discussed the NFL multiple times in recent days. It's gotten a lot of reaction. There are over 500 players expected to kneel or protest in some fashion during the National Anthem today. Mike Tomlin and the Pittsburgh Steelers are taking a different approach. Instead of kneeling or linking arms, they won't be participating in the National Anthem.
ESPN analyst Rex Ryan (who publicly backed Trump during his campaign) spoke out against the President earlier today.
You can watch President Trump discuss the NFL below. Those are the comments Ryan was talking about.