Former FBI deputy director Andrew McCabe, who was fired, has accused the bureau of stalling publication of his tell-all book.

McCabe said he was “disappointed” about the delay of his book — which he trailed as being about how Trump's "attacks on me symbolize his destructive effect on the country as a whole" — due to an FBI review of the manuscript. It was originally due to be released Dec. 4 but will now not be out until next year.

“[T]he FBI's review has taken far longer than they led me to believe it would. Having been singled out for irregular unfair treatment over the past year, I am concerned it could be happening again,” McCabe said in a statement released through his spokeswoman early Thursday,

Now, the book will be released sometime in February 2019, and McCabe said he is “looking forward to sharing my story with the public.” Entitled "The Threat: How the FBI Protects America in the Age of Terror and Trump," it will be published by St. Martin's Press.

McCabe was fired by Deputy Attorney General Rod Rosenstein in March, less than 48 hours before his retirement day because of "allegations of misconduct" found by the Justice Department’s Office of the Inspector General. McCabe, has disputed the IG report, and is now the subject of a grand jury inquiry.

According to the FBI’s employment agreement, all disclosure of information must be reviewed and adhere to the FBI’s “Prepublication Review Policy Guide,” made official in 2015.

"If the review requires additional time, [the FBI] will provide periodic progress reports and will advise the submitter of the anticipated completion date,” the policy guide states.

McCabe has been thrust back into the news after it was revealed that memos he kept of his conversations and meetings were used in part to verify a New York Times report from late September alleging Deputy Attorney General Rod Rosenstein discussed secretly recording President Trump, as well as trying to remove him from office.

Rosenstein dismissed the allegations, and after it appeared that his tenure at the Justice Department was in danger, he smoothed things over with President Trump this week.

[Related: Top FBI lawyer: We took Rosenstein talk of bugging the president very seriously]

Immediately after the New York Times report, Rosenstein issued a statement saying: "I never pursued or authorized recording the president, and any suggestion that I have ever advocated for the removal of the president is absolutely false."

In response to the New York Times report, attorneys for McCabe issued a statement acknowledging that McCabe "drafted memos to memorialize significant discussions he had with high-level officials […] so he would have an accurate, contemporaneous record of those discussions."

McCabe's attorneys said they gave the memos to special counsel Robert Mueller, but had "no knowledge of how any member of the media obtained those memos."

On Wednesday, the Washington Post reported that Rosenstein and McCabe once argued that the other should cut ties with Mueller’s investigation. The confrontation occurred in May 2017, shortly after President Trump dismissed fired FBI Director James Comey and McCabe was promoted as temporary head of the bureau.

While the conversation did not result in either Rosenstein or McCabe recusing themselves from the investigation, it came a couple of days after the New York Times reported on Rosenstein’s mention of wearing a wire and invoking the 25th Amendment against Trump.

Trump has often attacked McCabe as a symbol of bias atop the FBI. McCabe’s wife campaigned as a Democratic candidate for a Virginia Senate seat in 2015, and received funding from a Hillary Clinton ally.

When McCabe’s book was first announced, he said in a statement: “I wrote this book because the president's attacks on me symbolize his destructive effect on the country as a whole. He is undermining America's safety and security, and eroding public confidence in its institutions. His attacks on the most crucial institutions of government, and on the professionals who serve within them, should make every American stand up and take notice."