He's now playing alongside on-loan Aston Villa forward Ross McCormack for the Gosford-based club, having spent time training with Borussia Dortmund earlier in the year.
The 100 and 200 metre world record holder quit athletics past year and is now on trial with Australian football club Central Coast Mariners as he looks to achieve his new dream of becoming a professional footballer.
While the proposed European club remains a mystery, the Mariners already have global connections with Sao Paulo in Brazil, Sheffield United in England and Ferencvaros in Hungary.
The Australian anti-doping agency ASADA sent Usain Bolt a notice advising him that he was to be drug tested, following his start and two goals for the Central Coast Mariners on Friday.
Despite his heroics in a friendly last week, Central Coast Mariners are still undecided on whether to offer a contract to the Jamaican.More news: Call of Duty: Black Ops 4 Breaks Digital Day One Launch Sales
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"So guys I've retired from track and field looking to become a footballer but look at this", Bolt said in an Instagram post on Monday, in which he showed the drugs test notice.
Tony Rallis, who is representing Bolt while he is in Australia, has now said that a European side with ambitions of playing in the Champions League have offered him a deal.
The fastest man in the world had been hoping to win a contract with the Mariners in his bid to kickstart his professional football career following his retirement from athletics. According to news.com.au, any formal offer from the club would likely require "a contribution" from Football Federation Australia.
"How am I going to get drug tested today?"
Bolt has previously trained with German giants Borussia Dortmund and trialled with Norwegian side Stromsgodset.