Guildford, England — Running back Reggie Bush came to London in 2008 with the New Orleans Saints. He didn't play in the win over the San Diego Chargers, but he experienced the thrill of playing in front of a crowd that's not as familiar with the sport.

On Tuesday, Bush returned to London with the Lions, and in the six years in between, he said interest in the NFL has grown significantly, so much so that Bush expects the league to expand overseas in the near future.

"I think it's only a matter of time before an NFL team comes to London, and I think it's only a matter of time before they have a Super Bowl here, too," he said Tuesday at a Play 60 event. "That's going to happen for sure. I don't know when, but I definitely see that happening."

The NFL began its international series at Wembley Stadium in 2007, and the league had one regular-season game in London until 2013 when it added a second game. This year, the Lions and Atlanta Falcons are playing in one of three games at Wembley, and the upcoming game sold out in just two weeks.

Cedric Saunders, the Lions' vice president of football operations, said last month he could see the NFL putting a team in London, too.

"The way they're pushing it now and if it ever happens, I'm thinking they try to have something in place within the next five years," Saunders said. "If they don't do it that way, I'm thinking they probably just up the amount of games."

Demand for American football internationally has increased significantly in recent years, and the wider the NFL can expand its brand, the more profitable it can be. Before adding a team in England, though, the league would have to look into all aspects of the travel and whether it creates a competitive advantage or disadvantage.

Bush said he didn't have any insight as to why he expects the NFL to expand to London, but he sounded confident it would happen.

"It's grown a lot and that's great for the sport, and I think it's great for the NFL," he said of the London trips. "It just makes it that much more powerful and I think it's great that we get a chance to come over here and teach kids about our sport, American football, and just grown the sport more and more."

Bush, who's on his third team of his career, also wouldn't shy away from playing for the possible London team.

"I'll play for any team," he said.