The Saudi Public Investment Fund have been frustrated by Premier League regulations at Newcastle United – and that dynamic does not look likely to end any time soon. With PIF projected to have assets worth £2trillion under management by 2030, Newcastle are officially the richest club in the world on paper. But the Premier League’s Profit and Sustainability Rules (PSR) limit Newcastle to losing a maximum of £105m over a rolling three-year period. Some commentators have even suggested that these constraints mean thatNewcastle are no longer PIF’s priority when it comes to football. PIF are certai…