American billionaire Robert Kraft has backed the Premier League's plans of a 39th international round.

Kraft, who owns the NFL franchise the New England Patriots, believes the idea of a Premier League's 39th game would be successful in his homeland.

"We draw 50-60,000 people when we have teams playing an exhibition game," he said.

"That would be smart. That's the sport of the world. And this is the best media market in the world."