Francis Kallon has only been playing American football for a few months and is still learning the rules.

But that hasn't stopped the 17-year-old from becoming the most talked about young player in the US.

He's had more than a dozen offers from universities across America to join their teams after playing the game for the first time last spring.

Now the 6ft 6in (1.98m) teenager is tipped as a future star of the National Football League (NFL).

To find someone with so much talent who's never played the game before is rare Todd Wofford Coach

Francis moved from London to Lawrenceville, Georgia, last year with his family.

When he started at his local school he says he had no interest in trying out American football

"I didn't even know what American football was about," he admits.

"I'd seen it before on the TV but I would just switch it off."

Francis was first spotted in the gym at Central Gwinnet High by school coach, Todd Wofford, who believed the teenager had the potential to be a useful player for his team.

"I watched him playing soccer and he was phenomenal. His footwork was great and he was so tall and strong," says the coach.

'Something special'

It took the coach several months to persuade Francis to give the game a try but he says it was worth the wait.

"I looked at my assistant and said, 'I think we just might have something here.'"

"Anybody can look at him and see he is something," says Todd. "He has as much potential as anyone I've ever seen - or more."

Within weeks Francis had been spotted by scouts across the US and was offered 13 scholarships.

Playing college football, as it's known, is a big deal in the US.

Games are televised and played in stadiums with as many as 80,000 spectators.

Francis says he's likely to study in Georgia so he can be close to his family, but after that the next step is the NFL - one of the highest-paid leagues in the world.

"My goal is to focus on doing what I've been doing and getting better," he says. "And if the NFL comes I'll take it."

It's a step Francis's coach believes will happen.

"To find someone with so much talent who's never played the game before is rare," he says.

"There are guys who've played the game for years who'll never be as good as he is after just a few months."