Portsmouth head to the High Court on Wednesday and will attempt to secure an adjournment in hearing their appeal against a winding-up petition.
The club owe money to Her Majesty's Revenue and Customs but talks broke down over a deal to pay a portion of the money back and reschedule further debt, meaning the matter goes to court.
The Premier League's bottom club, who earned a last-gasp 1-1 draw against Sunderland on Tuesday night, are expected to ask for an extra 28 days to put together their case.
Should they fail in their attempt for an extension, Pompey could face going into administration.
News of talks breaking down with HMRC came after Aruna Dindane netted a 96th-minute equaliser on an evening when there were four dismissals, including Avram Grant being sent off for a half-time rant at referee Kevin Friend.
