Manchester United's war with Liverpool over the Gabriel Heinze transfer will erupt again this week.
United chief executive David Gill has written to the Premier League over accusations their rivals tapped up Heinze this summer. League chiefs will discuss the case this week which could lead to a formal complaint from Old Trafford and leave Liverpool facing a Premier League charge.
And in a separate probe, the League will investigate claims Crystal Palace were asked to sign Heinze from United before selling him on to Liverpool.
If they are satisfied that happened, the case will be handed to the FA for them to take disciplinary action.
That could land Liverpool with two huge fines and add more fuel to the simmering feud between Sir Alex Ferguson and Rafael Benitez (right). Liverpool's bid to sign Heinze was blocked by United, who claimed that a letter promising the player he could leave for £6.8million only applied to a move abroad.
A League tribunal ruled in favour of United and also heard evidence from Palace chief executive Phil Alexander that he was approached by Heinze's representatives with a plan for him to join the London club before being sold on to Liverpool.
The defender eventually joined Real Madrid but this latest confrontation heightens the growing tension between Sir Alex Ferguson and Rafa Benitez.
The Anfield boss said this week: "I have a lot of respect for Alex Ferguson but I have to focus on my club."
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