Author Michael Wolff has a deal for a sequel to his infamous tell-all about President Donald Trump, according to Axios.

Wolff signed on with publisher Henry Holt for a second part to “Fire and Fury.” It is “unclear” what the book will exactly be about, Wolff told Axios.

“It’s untitled, unscheduled, unfocused,” Wolff told Axios.

“Fire and Fury,” published in January, has sold two million copies in the United States. Trump has heavily criticized the book, tweeting that Wolff “is a total loser” in January. (RELATED: ‘Fire And Fury’ Has A New Enemy. So Where Is Michael Wolff?)

Michael Wolff is a total loser who made up stories in order to sell this really boring and untruthful book. He used Sloppy Steve Bannon, who cried when he got fired and begged for his job. Now Sloppy Steve has been dumped like a dog by almost everyone. Too bad! https://t.co/mEeUhk5ZV9 — Donald J. Trump (@realDonaldTrump) January 6, 2018

Many of Wolff’s sources, such as former White House chief strategist Steve Bannon, no longer have direct access to the White House.

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