Hearts are subject to a Scottish Premier League transfer embargo after failing to pay their players on time, it has emerged.
Six Hearts players and manager John McGlynn did not receive their salaries on schedule for a second successive month, Press Association Sport understands.
The September breach and new financial controls triggered an automatic ban on registering new players.
It means forward Rudi Skacel, who is training with the club he left for a second time in May, will at present be unable to sign for Hearts if he is offered a deal.
The SPL board are scheduled to meet on Monday, with the situation at Tynecastle on the agenda. The SPL have been informed verbally of the delay to October's salaries, with regulations dictating Hearts have 48 hours to inform the league of the breach in writing.
September's salaries were received four days late as an issue which overshadowed last season resurfaced.
It is understood the Hearts players affected - the club's higher earners - are prepared to wait once again, hoping for a swift resolution, particularly as the issue has already been raised with the SPL.
Last term, three straight months of delayed player wages prompted an official complaint from the players, via union PFA Scotland, to the SPL, but action was averted in January after Hearts met the demands imposed.
However, the issue reared its ugly head again in March, when players and staff received their salaries 12 days late.
Hearts are scheduled to host Motherwell in the Clydesdale Bank Premier League on Sunday and currently sit ninth in the table.
- Scottish Premier League