[Steven Tyler]

The owners seem to be in a tight spot.

If the owners terminate a Player:
The Player Union will fight any termination of their membership.
ESPN and the Media will paint you as raycist
The Community Organizer will send ANTIFA and BAMN to your home and terrorize your children and wife.
George Soros funded lawyers will sue you and try to bankrupt you.

Thanks Barry Soetoro!

[Alberta's Child]

The owners have more flexibility here than you think. They cannot "terminate" a player by severing the employer-employee relationship completely, but they can certainly deal with a destructive player in other ways.

For example ... the player can be relegated to the inactive squad for the remainder of the season, and never set foot on the field again for the team. He will still collect his salary for that season, but since NFL contracts are only guaranteed on a year-by-year basis he can be cut from the team after the season is over.