Photo of Dallas Cowboys kneeling before game against Arizona Cardinals

The owner of Dallas Cowboys has told his players they must stand for the national anthem.

“If there is anything that is disrespectful to the flag then we will not play,” Jerry Jones said.

It follows US Vice President Mike Pence’s decision to leave the game between San Francisco 49ers and Indianapolis Colts after several players refused to stand.

President Trump has tweeted his support for Jerry Jones.

Two weeks ago, Jerry Jones linked arms with his players and knelt before the anthem was played in the game against Arizona Cardinals.

It’s after President Trump called on players to be sacked if they refused to stand for the national anthem.

The kneeling originally started as a protest over how black Americans are treated in society.

But it appears that Jerry Jones has now changed his mind. “We cannot, in the NFL in any way, give the implication that we tolerate disrespecting the flag.”

The Cowboys’ boss was one of the seven NFL owners to donate to Trump’s inauguration.

There have been reports that other teams have told players they must stand.