The Saudi Public Investment fund have been frustrated and anchored by the Premier League’s Profit and Sustainability Rules since their takeover of Newcastle United in October 2021. PIF have been unable to bankroll losses of more than £105m over a rolling three-year period, as is required in the PSR system And while there can be no doubt that the hundreds of millions they have pumped into Newcastle has transformed the club, they have not yet been able to realise their huge ambitions on Tyneside. With an increasing focus on commercial income and potentially a lucrative new or improved stadium at…