Former Attorney General Bill Barr threatened to quit if then-President Donald Trump fired Christopher Wray, the director of the Federal Bureau of Investigation, according to a new report.

Barr learned of plans to dismiss Wray when Johnny McEntee, a top Trump aide, introduced him to Bill Evanina, a top counterintelligence official in the administration who was reportedly being considered as a potential replacement for Wray, according to Business Insider. When told of plans to replace Wray, as well as swapping then-Deputy FBI Director David Bowdich with Trump national security adviser Kash Patel, Barr threatened to quit, a person briefed on the matter told the outlet.