Newcastle United have confirmed they have launched legal proceedings against the Premier League following a failed takeover bid in the summer.
The club claim the Premier League broke a confidentiality clause when it "leaked the contents" of a letter about the proceedings to a supporter group.
A Saudi Arabian-backed consortium pulled out of a £300m deal in June.
They rejected the offer from the Premier League (EPL) of arbitration to determine who would own the club.
Newcastle say they have not previously commented on the proceedings "with respect to its conduct relating to the proposed takeover because of the confidentiality clause in the EPL's rules".