With almost £1.5bn spent since Todd Boehly and Behdad Eghbali arrived at Stamford Bridge, Chelsea are feeling the pressure under Profit and Sustainability Rules (PSR). PSR, which is the system that was formerly labelled Financial Fair Play or FFP, currently works on a profit-loss basis, with Premier League clubs like Chelsea allowed to lose no more than £105m over three years. From next season, the Premier League is set to move to a model whose structure is closer to UEFA’s, which caps spending on wages, transfers and agent fees at a percentage of revenue. As participants in the Conference Lea…