O'Reilly and O'Brien have committed personally to investing at least €30m to buy out bondholders as part of a proposal to refinance a €200m bond due on May 18.
Under the plans, the newspaper publisher will ask bondholders to roll over between 60% and 70% of their investment into a new bond with a higher interest rate, according to a report in the Sunday Times.
O'Reilly, the outgoing chief executive of IN&M and largest shareholder with around 28.5%, and O'Brien, the firm's second largest shareholder with 26%, will reportedly refinance the rest of the €200m bond from their own cash, along with a bridging facility negotiated with IN&M's bankers.
O'Brien told the Sunday Times that the chance of the proposal being successful was "50-50".
German price-comparison website , and the online bingo firm Cashcade, which operates .
Reports have also surfaced about IN&M mulling plans to sell its flagship titles -- The Independent and The Independent on Sunday with The Times of India and Alexander Lebedev mentioned as possible buyers.
IN&M is due to publish its full-year figures on Thursday after postponing their release twice due to the ongoing talks with bondholders.
Total revenues are expected to be down 3% on the previous year to €1.4bn.