(CNN) Former Trump presidential campaign aide Rick Gates has agreed to testify against former Trump campaign chairman Paul Manafort and will plead guilty to fraud related charges, according to the Los Angeles Times.

The Times reported Sunday a revised plea will be presented in federal court "within the next few days."

CNN first reported last week that Gates was finalizing a plea deal and that he had been in plea negotiations with special counsel Robert Mueller's team for a month.

Gates can expect "a substantial reduction in his sentence," to likely about 18 months in prison if he cooperates with the investigation, according to the LA Times report. He is also likely going to have to forfeit any cash or valuables obtained through his alleged illegal activity.

Aside from the legal maneuvering, the father of four has faced personal and financial pressure to bring his legal proceedings to a speedy resolution, a person familiar with the situation told CNN

Read More