The Premier League have received Tottenham Hotspurs’ complaints against Liverpool and Manchester United over their attempts to sign Robbie Keane and Dimitar Berbatov respectively.
A PL spokesman said: “We confirm we have received complaints from Tottenham in relation to alleged breaches of Premier League Rules K3 and K8, which govern approaches to contracted players.
“The Premier League board will now write to the parties concerned to ask for their observations before considering the appropriate course of action.”
A United spokesman has also said: “We are aware of the allegation and will co-operate with the Premier League as necessary.”