United Kingdom, July 2 -- Jason Kelce thinks American soccer fans need to improve their trash talk.

The 38-year-old former NFL star - who is the elder brother of Travis Kelce - has called on American soccer fans to develop some more imaginative chants for their World Cup games.

Speaking to Landon Donovan and Tim Howard on the Unfiltered Soccer podcast, Jason explained: "I hear a lot of the other chants from UK teams. 'I believe that we will win!'

"I know you played over there, Tim. I know that there's a lot of energy and passion in those chants. And not just that. Aggression. They're going to be in your face with those chants.

"'I believe that we will win,' that's a little . we need to step this up a bit."

Jason dislikes what the fam...