NFL players may collectively bargain for grass fields in future negotiations but it would come at a cost

Days after the FIFA World Cup Tournament left some of its American NFL venues with the pristine grass fields it installed, the change back to synthetic turf normalcy has already begun. And that's unwelcome news for NFL players.

That is why the NFL Players Association will consider whether to make a requirement for grass fields across the NFL a top-tier demand in future collective bargaining negotiations with the league, according to a union source.

A final decision on that approach is not imminent, the source said.