“My problem with Donald Trump sitting down is that Donald Trump talks in such loopy ways, and he’s constantly contradicting himself and saying things,” Ari Fleischer said. (Photo: Fox News)

Former White House press secretary Ari Fleischer said Wednesday that an interview between President Donald Trump and special counsel Robert Mueller would be “calamitous” due to the president’s “loopy ways” of talking.

“There’s a massive amount of risk,” Fleischer, who served in the administration of President George W. Bush, said on Fox Business Network. “The risk of losing his office. That’s the risk. The risk is they trip him up over something innocuous. Where he says something that is contradicted by something, and they call it perjury. And that goes to Congress, and then Congress goes to the Democrats in the fall and he gets impeached.”

Trump’s legal team is still negotiating with the special counsel’s office, which has sought a sit-down interview with the president for months as part of Mueller’s ongoing inquiry into Russian meddling in the 2016 election. The president’s lawyers have repeatedly urged Trump to reject the request, concerned that he’ll go off-script and perjure himself.

The New York Times reported last week, however, that Trump is again pushing his attorneys to let him speak with Mueller, hoping he can clear his name and convince the special counsel that the investigation is a “witch hunt.” The president’s attorney Rudy Giuliani said Trump’s legal team had rejected Mueller’s latest offer for the interview on Wednesday, instead proposing a narrow scope of questions as a counteroffer.

Fleischer said on Fox that he didn’t think the interview was “going to happen,” saying he just “can’t imagine something that would be this calamitous for the president moving forward.”

“My problem with Donald Trump sitting down is that Donald Trump talks in such loopy ways, and he’s constantly contradicting himself and saying things,” Fleischer said.

Mueller has threatened to subpoena Trump if his lawyers eventually refuse the request, although such an attempt could lead to a prolonged legal battle. Fleischer said he thinks that would be the “safer course.”

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This article originally appeared on HuffPost.