The cost of redeveloping Stamford Bridge 'would now be around £2.2billion' - a substantial rise from initial estimates of £1.4bn - with Roman Abramovich's ownership of the club in doubt.
Although the Russian-Israeli billionaire has publicly expressed a desire to retain ownership of Chelsea, which he bought in 2003, this could prove impossible should the UK government impose sanctions on him following Russia's invasion of Ukraine.
And the Swiss billionaire Hansjorg Wyss has claimed he has been offered the chance to join a £2bn consortium with 'six or seven' other investors to buy the west London club.