NYT has this report.

With his criminal trial for contempt of Congress approaching, Stephen K. Bannon, an ally of former President Donald J. Trump’s who was involved in his plans to overturn the 2020 election, has informed the House committee investigating the Capitol attack that he is now willing to testify, according to two letters obtained by The New York Times.

His decision is a remarkable about-face for Mr. Bannon, who until Saturday had been among the most obstinate and defiant of the committee’s potential witnesses. He had promised to turn the criminal case against him into the “misdemeanor from hell” for the Justice Department.

But with the possibility of two years in jail and large fines looming on the horizon, Mr. Bannon has been authorized to testify by Mr. Trump ….

In related news, the Washington Post has this story, noting that “the prospect of Bannon’s testimony could turn out to be a ploy.”