The issue is supposedly over stadium payments or interest on loans for the stadium. Im not going to pretend to know what they are or who is right.
From Athletic
Everton argued that £17.4million worth of interest payments were used for their new stadium project and should not be included in their PSR calculations, but when the commission found in the league’s favour, that shortfall left them in breach.
With the 2023 summer window already closed, Everton were unable to do business in the market to recover the amount, leaving them at risk of a breach in 2022-23 as well. Almost overnight, the club’s internal forecasting was put out of kilter, with pessimism quickly setting in over their attempts at compliance for the latest cycle.