There is speculation it may be a cash offer to tie him to the club and allow the Mariners to retain their option on signing him full-time when he completes his training and trial with the club.
The eight-time Olympic champion has been on trial with the A-League side since arriving in August to fulfil his dream of becoming a professional footballer.
According to ESPN, the Jamaican and his camp asked for $3 million but Mariners were only prepared to offer him around 5 per cent of his demands, with $150,000 their proposal.
O'Rourke reiterated that Football Federation Australia wouldn't dip into its marquee fund for any Bolt deal.
But O'Rourke said marketing components had been discussed with Bolt's potential contract.
While the world outside Gosford seems to be following every detail of Bolt's bid to become a professional footballer, it hasn't managed to captivate one of the A-League's most experienced central defenders.
The 32-year-old made his intentions clear that he wanted to pursue a career in football and has spent the last two months on trial with the Australian club.
"There were some marketing conversations about contributions towards attendances at games, appearance fees if you like, but as for funding him as a footballer then the FFA has been consistent in that they won't fund him".
"You have a look at our front line today and you wonder whether he could get into any of those positions".
Reports of the offer surfaced during the contest, with Mariners boss Shaun Mielekamp reportedly having tabled a contract with Bolt's management over the weekend.
"It won't change. Football purists would say if you have some money to invest, we don't think you should put it into a trialist like Usain".
"Wouldn't you?" Mulvey said after the team drew their opening A-League game of the season 1-1 away to Brisbane Roar on Sunday. "I don't know anything about what you're talking about and that's the God's honest truth".