Abramovich faces a visa battle as he was forced to watch his club’s FA Cup final win over Manchester United from Russia.
Home Office bosses are reportedly dragging their feet on renewing his travel documents.
Russian authorities have blasted Britain over the case, claiming it also down to recent hostility between Moscow and Downing Street.
Sources close to Abramovich have now said the Chelsea owner has denied reports Britain has asked him to prove his money is clean.
Reportedly Abramovich’s investor visa allowing him access to the UK has expired and he has not been in the county since early April.
Abramovich is reported to have been told to prove at least £2million of investment in the UK is from legal sources.
The footie boss has a net wealth of £9.3 billion and has close ties to the Kremlin.
Source in his inner circle said today: “He was not asked to explain the source of his capital.”
There were “no additional requirements” in applying for his new permit to enter Britain.
Abramovich was undergoing “the usual process of visa renewal, just longer than usual”, reported state-owned Sputnik news agency.
And sources close to the Chelsea chief said they were “assuming” his application would be accepted.
The Prime Minister’s official spokesman said “work is under way” in reviewing Tier 1 investors visas.
Moscow media reported visas for all Russia on investor visa are facing delays of between “three to six weeks”.
Abramovich’s case has raised fury from the Kremlin who branded the UK “unfriendly and unscrupulous”.
It claims Russian businessmen “often” have problems coming to the UK.
Relations between Russia and Britain are strained following clashes over MI6 double agent Sergei Skripal.
Downing Street as accused the Kremlin of masterminding the poisoning of Skripal and his daughter Yulia with nerve agent Novichok in Salisbury.
MPs accused Putin and his allies of using London to hid and launder corrupt assets in hard-hitting report titled Moscow’s Gold: Russian Corruption in the UK.
Foreign affairs select committee warned the government is being lax on talking the issue which is putting money “directly into the hands of regimes that would harm the UK”.
The committee called on Britain to close loopholes which allow individuals and companies to access the London markets while being sanctioned.
There is no indication that Abramovich has made or invested any money illegally in the UK.