Supporters of former President Donald Trump are reeling from revelations in a forthcoming book in which it is claimed that he privately endorsed a push to replace his son-in-law, Jared Kushner, with former aide Steve Bannon as the person in control of his 2020 re-election campaign, as The Hill reports.

The claims come from a forthcoming book by former Trump aide Peter Navarro entitled, Taking Back Trump's America: Why We Lost the White House and How We'll Win It Back.

A regular critic of Kushner and his role in the Trump presidency, Navarro outlines the plot to oust the husband of the first daughter Ivanka Trump – something he likened to a "coup d'etat – and asserts that the then-president was supportive of the idea to bring Bannon aboard for campaign purposes.

According to Navarro, Trump agreed with the personnel change in principle, but was worried about potential "family troubles if [he] himself had to deliver the bad news to … the father of his grandchildren," and as a result, allowed others to do so as proxies.

Tapped to tackle the delicate task, Navarro says, was top Republican donor and founder of Home Depot, Bernie Marcus, whose initial call to Kushner went unanswered, and who was ultimately told by the target of his assignment that "things were fine with the campaign" and that he had no intention of stepping down, regardless of what high-dollar contributors had to say.

In the author's estimation, "that was that. And the rest is a catastrophic strategic failure history," in that he believes it ultimately led to the White House changing hands in January of 2021.

The soon-to-be-released book is not the only forum in which Navarro has vented his spleen about Kushner, as was evidenced by his recent appearance on The Stew Peters Show podcast last week, in which he deemed the latter one of the "worst" aides to have served in the Trump administration, as Business Insider suggested.

"If Steve Mnuchin, the Treasury secretary, and Jared Kushner, the Rasputin son-in-law, had never, ever darkened the door of the White House, I believe that Trump would still be in the Oval Office," declared Navarro, who also went so far as to accuse Kushner of faking a thyroid cancer diagnosis to bolster sales of his recently-released memoir.

Though it remains to be clear whether Trump intends to make another bid for the presidency in 2024, the potential involvement of Navarro and Kushner is far from certain, given that the former is slated for trial this fall on contempt of Congress charges, and the latter has indicated a preference for remaining in the private sector, where he has been since departing D.C.