Manchester City are alleged to have clocked up more than 100 breaches of the competition rules during a 14-year-period in which they have won the Premier League six times - including four of the last five.
It comes after the Blues were temporarily expelled from the Champions League by UEFA for breaching their Financial Fair Play regulations back in 2019. However, the Court of Arbitration for Sport (CAS) ruled a year later that the club did not disguise equity funding as sponsorship contributions - but that City did fail to co-operate with UEFA authorities.
In 2020, CAS overturned a two-year ban from European football and €30million fine that were imposed upon City. It meant that City were free to play in UEFA competitions, and were instead fined €10m for failing to cooperate.