Michael Cohen may be clearing his conscience with a new plea deal. However, his answers about President Donald Trump‘s dealings with Russia, according to former White House Ethics Czar Norm Eisen, may spell trouble for the commander in chief.

During a Thursday evening appearance on CNN, Eisen told host Chris Cuomo that the longtime fixer’s flip could prove damning for his old boss.

“You have somebody who’s in Trump’s innermost circle for so long, Chris, who’s known as his fixer, who knows where the bodies are buried, who’s stepping up and admitting that he lied to Congress to cover up the continued business dealings between Donald Trump and the Trump organization during the campaign when Trump had already clinched the nomination,” Eisen said.

The crucial questions, he noted, now surround Cohen’s motivation to lie in the first place and place his own self in the line of legal fire. Now that he’s supposedly being honest and cooperating with Special Counsel Robert Mueller‘s investigation for dozens of hours, Eisen feels he’s a bigger threat than before.

“He’s a much more dangerous witness.”

Watch the clip above via CNN.