MILLWALL could be handed a lifeline in their battle against relegation with Rotherham facing a points deduction for fielding an ineligible player.
It is claimed the Millers did not formally extend the loan deal of Derby defender Farrend Rawson before he played 90 minutes in a 1-0 win over Brighton on April 6.
Rotherham have now been charged by the Football League and an independent panel will determine the club's punishment before the end of the season.
The Lions, who face second-bottom Wigan tomorrow night, are seven points adrift of the Yorkshire side with a game in hand.
Last year, the Football League handed out a three-point deduction and a fine to AFC Wimbledon after they fielded an ineligible player in a 4-3 victory over Cheltenham.
Blackpool were fined £30,000 earlier this season for the same rule breach when Donervon Daniels played in a 2-1 defeat at The Den.
But given that Daniels' involvement did not prevent Millwall from winning the game, there was no points deduction.
A fine in this instance would almost certainly prompt an appeal or legal challenge from other clubs at the bottom of the Championship table.
A Football League board meeting is scheduled to take place on Thursday, when the timeline for Rotherham's discplinary hearing is likely to be determined.
Millwall have released a statement confirming that they are aware of the governing body's investigation but will be making no further comment.
Rotherham have said: "The case will be heard before the Football Disciplinary Committee and such proceedings under league rules are confidential until the case is concluded.
"Therefore we have been advised by our counsel Jim Sturman QC to make no further comment until the case is concluded."
Sturman successfully defended Millwall from two Football Association charges in 2009 following crowd disorder at West Ham.