"Now I go to watch a basketball game and, when you are watching athletes play at the top of their game, for me it gives me that itch again," he said.
     
"I want to be back in the game then and I start thinking to myself, 'Could I play again? Could I go back? Could I come out of retirement and start playing again?'"
     
Beckham, 39, called time on his playing career last year after a brief spell with French giants Paris Saint-Germain.
     
The former midfielder is currently working to launch a Major League Soccer team in Miami and he suggested that he might consider turning out for the team.
     
"There's never been a player-owner, but maybe?" said the former Manchester United, Real Madrid, Los Angeles Galaxy and AC Milan player.
     
The documentary, David Beckham: Into The Unknown, charts an 800-mile (1,287-kilometre) journey that he made into the Amazon rainforest, ahead of this month's World Cup in Brazil.

(Agencies)

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