Former solicitor Michael Lynn is due to be extradited from Brazil next week.
His counsel Michael O’Higgins told the High Court yesterday that the Crossmolina native expects to be extradited back to Ireland on February 28.
He said Mr Lynn’s lawyers were informed late on Tuesday night that the extradition is set to take place.
Michael Lynn is looking for a declaration from the High Court that his time in a Brazilian prison will be taken into account if he is convicted in Ireland.
The struck-off solicitor failed to turn up in the High Court in 2007 and fled the country, leaving behind an estimated €80 million in debts.
He is being held at a remand prison in Recife in northwest Brazil.
Mr Lynn has been in prison since 2013 when Brazilian federal police, acting on behalf of Interpol, arrested him.
His High Court challenge relates to an offer by the Director of Public Prosecutions to Brazil of a guarantee that Mr Lynn's time served in that country would be offset against any prison term he might get in Ireland if convicted.
Mr O'Higgins told the court that Irish authorities have no legal power to do that and Mr Lynn needs a declaration from the High Court.
Senior Counsel Sean Gillane, for the DPP, argued the proceedings should be dismissed.
Mr Justice Michael McGrath reserved judgment, and said he hopes to rule by tomorrow, given the extradition is scheduled for 28 February.