Bolt is now in Sydney trying to pursue a professional career in football and is on trials with Central Coast Mariners.
"So guys, I've retired from track and field looking to become a footballer but look at this", Bolt said in an Instagram story.
"We have to sit down with the coach and the management and see if we go forward, what's the plan and if they want to sign me or if I need to do more".
Usain Bolt's professional football career could be about to truly kick off.
Bolt received an order from the Football Federation of Australia to provide blood and urine in an out-of-competition test under the authority of the Australian Sports Anti-Doping Authority.
Central Coast Mariners trialist Usain Bolt has a two-year contract offer from Valletta, the Maltese champions have confirmed.
It remains unclear exactly who is trying to sign Bolt but ESPN report that Central Coast Mariners boast connections with sides around the world, such as Sheffield United and Ferencvaros in Hungary.
They define an athlete simply as a "person who competes in sport and if the sport has an anti-doping policy".
The former Olympic champion sprinter hit the headlines last week when he scored twice for Australian side Central Coast Mariners in their friendly against Macarthur South West United.
The eight-time Olympic champion, who dominated sprinting after taking double individual gold at the Beijing Olympics in 2008, is now bidding to become a professional footballer.
Bolt's trial period with the A-League club came to an end at the weekend and the Mariners now have to decide whether to offer the Jamaican a permanent deal, a further trial period or release him.
As Bolt is not contracted to the Mariners, they have no right to request a transfer fee or any form of cash in return for the fastest man in the world.