Leeds United have been issued with a winding-up petition by shirt sponsor Enterprise Insurance over an alleged unpaid debt.
Enterprise Insurance, who are based in Gibraltar, lent Leeds £1.7m in 2012 at an interest rate of 7% for repayment next year. The case is due to be heard at the High Court in March.
The news comes following a tumultuous few days for the club.
Italian businessman Massimo Cellino agreed to buy a 75% stake in Leeds last weekend, subject to approval from the Football Association.
However, his plans have been met with stern opposition from supporters at Elland Road.