A private arbitration hearing that could lead to the expulsion of Manchester City F.C. from the Premier League has begun as the league accuses the defending championship club of violating financial fair play regulations and refusing to cooperate in investigations.

The hearing, which is being held in an undisclosed location and is governed by strict confidentiality provisions commonly found in arbitration proceedings, began on Monday. It is expected to last about three months, and the decision—which is not expected until 2025—could trigger an appeal and subsequent legal challenge.