https://www.vanityfair.com/hollywood/2017/11/corey-feldman-movie-campaign-interview

From the article:

"He plans to name six people: three who abused him and three others who are connected to them."

He's already named two of the three he says personally abused him (Jon Grissom, Marty Weiss).

His clues to the third abuser:

"There’s also another person who molested Feldman, he says, who is “linked to another person that was very much a big part of the studio. That person is now dead.” Those two people, Feldman claims, “pretended to be father and son,” but were actually lovers."