Bryant, who is a big basketball fan, said that James's physical presence would mean that he would only need to learn the tactical side of the sport.
"That dude is just that talented," ESPN quotes Bryant as saying. "I think it would take him probably about a good two weeks to get very acquainted with football, knowing what he's supposed to do. I think that's all he'd need with his physical ability.
"I've seen a little bit of his highlights from high school. He's got the hands, he can run the routes, he's fast enough. He could play in this league if he put it all together."
James is known to be a Cowboys fan.