Paul Manafort, Donald Trump’s previous campaign chairman, was found guilty on eight charges by a jury on August 21. These charges are related to tax fraud and bank conspiracy, but they are not related to the investigation into Russian election interference. However, there is another trial scheduled on September 21 with more financial fraud charges.

For over a year, Manafort has denied the charges of the first investigation. On September 14, he admitted to cheating the IRS out of $15 million, and to lying to investigators.

Earlier this month, Manafort agreed to a plea deal that requires him to provide testimony to special counsel Robert Muller. The testimony has the possibility of answering very critical questions about Russian efforts to influence the United States 2016 election.

Manafort’s lawyers have stated that the decision to accept a plea deal is motivated in hopes of lowering the prison sentence for Manafort. His cooperation with Muller may lead to breakthroughs in the Russian investigation.

“This is a big win for Mueller’s team. Gaining Manafort’s cooperation has always been viewed as the Holy Grail of this investigation,” said Robert Mintz, former federal prosecutor.

Furthermore, “It would be great for the country if this investigation ended quickly and efficiently,” said Antonio Thompson, 12.

This plea deal has the possibility of lowering his sentence to 10 years maximum, along with allowing his family to hold on to some of his property during his imprisonment.