NBA has not decided yet whether to penalize players if they don't stand for anthem
Adam Silver will deal with the situation if arises

The NBA has not decided yet whether to penalize players if they don’t stand for the USA national anthem.
Asked if a player will be penalized if he doesn't stand for the anthem, Adam Silver says such a situation would be dealt with if it arises.
— Ian Begley (@IanBegley) 28 settembre 2017
Below are the NBA rules for conduct during the National Anthem. pic.twitter.com/mCADF8lqYJ
— Bobby Marks (@BobbyMarks42) 28 settembre 2017