A White House spokesman says "all bets are off" when it comes to the new feud waging between former White House chief strategist Stephen Bannon and President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE.

In an interview with CNN, White House spokesman Hogan Gidley accused Bannon of doing little during his time at the White House beyond talking to journalists.

"Obviously over the course of Mr. Bannon's time in the White House, you've seen the results which he's produced, which is zero, and the president fired him for it," Gidley told CNN's Erin Burnett.

"It's obvious that Mr. Bannon spent his time at the White House talking to [author Michael] Wolff instead of doing his job," Gidley continues, referencing the author of "Fire and Fury: Inside the Trump White House," in which the Bannon quotes appeared.

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"But right now, Mr. Bannon came out and lied about the president, attacked his own family. So all bets are off," Gidley warned.

Bannon called Donald Trump Jr. Don John Trump'Tiger King' star Joe Exotic requests pardon from Trump: 'Be my hero please' Zaid Jilani discusses Trump's move to cancel racial sensitivity training at federal agencies Trump International Hotel in Vancouver closes permanently MORE "treasonous" in excerpts from the book published in The Guardian and New York Magazine over the elder Trump son's 2016 meeting with a Russian lawyer. The meeting was held under the pretense of obtaining "dirt" on Hillary Clinton Hillary Diane Rodham ClintonHillicon Valley: FBI chief says Russia is trying to interfere in election to undermine Biden | Treasury Dept. sanctions Iranian government-backed hackers The Hill's Campaign Report: Arizona shifts towards Biden | Biden prepares for drive-in town hall | New Biden ad targets Latino voters FBI chief says Russia is trying to interfere in election to undermine Biden MORE as part of the Russian government's support for then-candidate Donald Trump during the election.

“Even if you thought that this was not treasonous, or unpatriotic, or bad shit, and I happen to think it’s all of that, you should have called the FBI immediately," Bannon is quoted as saying in the book.

The comments from Gidley are the strongest since White House press secretary Sarah Huckabee Sanders's comments at Thursday's press briefing, during which she suggested that Breitbart News may wish to consider firing the former White House aide over the comments.

“I certainly think that it's something they should look at and consider,” Sanders said.

Trump, meanwhile, issued a blistering statement Wednesday that said Bannon had "nothing" to do with his presidency and very little to do with his campaign victory.

“Steve Bannon Stephen (Steve) Kevin BannonJuan Williams: Swamp creature at the White House Engineers say privately funded border wall is poorly constructed and set to fail: report Bannon and Maxwell cases display DOJ press strategy chutzpah MORE has nothing to do with me or my presidency,” Trump said. “When he was fired, he not only lost his job, he lost his mind.”