Ewood Park club could be docked points over Gael Givet signing from Stade Vélodrome.
Blackburn Rovers defender Gael Givet’s transfer from Marseille in 2009 will be investigated by the Football Association over payment to a third party.
The 29-year-old joined Blackburn in a £3.5million deal but has claimed he was forced to pay money to an unlicensed agent for putting the transfer together.
Evidence has been sent to FA headquarters, who will examine it before deciding to charge the club, agent or player.
FA rules strictly prohibit any third party being paid for a transfer unless they are a licensed agent.
The rules were put in place following the Carlos Tevez-West Ham United transfer saga.
The Hammers were forced to pay Sheffield United £30million after a court agreed he was ineligible to play in the Premier League and contributed to the Blades being relegated.
Luton Town were docked 10 points by the FA in 2008 for failing to register payments to agents with the governing body.
Queens Park Rangers were recently charged with third party payments but were eventually cleared after an investigation.
Blackburn could face a points deduction if they are found to have broken any rules but it is unclear whether they will be punished this season or next.
Currently Rovers lie a point above the relegation zone and any points deduction could have a dramatic outcome on the final Premier League table.
“We will be looking into the material and the issues that may be raised by the content,” an FA spokesman said.