The National Football League is expected to wait until after this season to implement a new policy regarding on-field protests during the national anthem, according to a report Sunday morning.

With the first week of the season underway, sources told ESPN that there is too much disagreement on the topic for a deal to be struck, though talks will continue.

[New: Miami Dolphins players kneel during national anthem, bringing controversial protests to 2018 NFL season]

Kneeling during the national anthem became a way for to protest injustice against minorities and police brutality. The demonstrations began in 2016 by former San Francisco 49ers quarterback Colin Kaepernick.

Critics, including President Trump, see the protests as being disrespectful the American flag and those who served in the military.

[Opinion: Take it from this veteran: Stop acting like kneeling for the flag has anything to do with us]

NFL owners approved a policy in May aimed at stopping on-field protests during the national anthem, guidelines that allowed individual teams to set their own player and personnel policies.

This policy eliminated the stipulation that players and team personnel be present during the performance and will let players remain in the locker room while the anthem is being played if their team deems it appropriate. However, the policy also stated that the league would fine teams whose players choose to be on the field and do not stand while the anthem was being played.

The NFL Players Association, the players union, filed a grievance in July, after which the groups reached a "standstill agreement" on the matter.