Manafort faces sentencing in a separate case next Wednesday in Washington on two conspiracy charges to which he pleaded guilty last September.

While he faces a statutory maximum of 10 years in the Washington case, US District Judge Amy Berman Jackson potentially could stack that on top of the sentence imposed in the Virginia case, rather than allowing the sentences to run concurrently.

Manafort is the only one of the 34 people and three companies charged by Mueller to have gone to trial. Several others including former campaign aides Rick Gates and George Papadopoulos, former national security adviser Michael Flynn and former Trump personal lawyer Michael Cohen have pleaded guilty, while longtime Trump adviser Roger Stone has pleaded not guilty.

Gates, a key witness against Manafort, has yet to be sentenced due to his ongoing cooperation with prosecutors.

Trump, who has called Mueller's investigation a politically motivated "witch hunt," has not ruled out granting a presidential pardon to Manafort, saying in November that "I wouldn’t take it off the table."

Jackson on Feb. 13 ruled that Manafort had breached his agreement to cooperate with Mueller's office by lying to prosecutors about three matters pertinent to the Russia probe including his interactions with a business partner they have said has ties to Russian intelligence.

Mueller is preparing to submit to US Attorney General William Barr a report on his investigation into whether Trump's campaign conspired with Russia and whether Trump has unlawfully sought to obstruct the probe. Trump has denied collusion and obstruction and Russia has denied election interference.

The crimes for Manafort was convicted did not directly relate to the 2016 election.

STUNNING DOWNFALL

The sentencing capped a stunning downfall for Manafort, a prominent figure in Republican Party circles for decades who also worked as a consultant to such international figures as former Angolan rebel leader Jonas Savimbi, former Philippine President Ferdinand Marcos and Yanukovych.