The world's fastest man, Usain Bolt says he has given up on his dream of becoming a professional football player.

The 32-year-old superstar spent eight weeks at A-League club Central Coast Mariners. He played in two pre-season friendlies. He then turned down a professional contract.

"I don't want to say it wasn't dealt with properly, but I think we went about it, not the way we should and you learn your lesson, you live and you learn. It was a good experience. I really enjoyed just being in a team and it was different from track and field and it was fun while it lasted

    "I'm just doing many different things ... the sports life is over, so I'm now moving into different businesses, I have a lot of things in the pipeline, so as I say, I'm just dabbling in everything and trying to be a business man now," he told ESPN.