High-profile businessman George Kerr said he "was in an impossible situation and was exploited" in deal over a A$37 million loan from a company associated with a wealthy Australian.
Kerr, the managing director of Pyne Gould Corporation, is an investor in a now-inactive private equity fund called Torchlight that was put into receivership last year by Wilaci, a company associated with John Grill.
Grill, chairman and former chief executive of WorleyParsons, was deemed to be one of Australia's top 50 richest people in 2013.
In August 2012, Wilaci made a A$37 million 60-day loan to Torchlight, which came with A$500,000 per week fee if it was paid back late.
Torchlight took 19 months to fully repay the advance and in May last year, Wilaci issued a A$33.6 million demand to the fund, around A$31 million of which was loan fees and interest.