By John Cross The Premier League is facing a major rebellion over ownership rule changes. Manchester City are believed to be the club who are threatening to make a legal challenge in the face of the league tightening up rules on Fair Market Value sponsorship deals. And although there is Premier League optimism, a financial deal with the EFL seems as far away as ever, despite talks between top flight and EFL clubs this week, largely made up of Championship teams. The new tightened up Associated Party Transactions Rules and Fair Market Value proposals were passed at a shareholders’ meeting in L…