Former New York City mayor-turned-Trump attorney Rudy Giuliani said Monday night that he will likely not allow Trump to be interviewed by anyone on Special Counsel Robert Mueller’s team because the Russia investigation is not legitimate.

Appearing on Fox News’ Hannity, Giuliani said a potential Trump-Mueller interview is “highly unlikely” because he would be walking into a perjury trap.

“I always have to leave the option open as a lawyer in case they come across with something that really startles us or fills some of the things that we feel are important,” he said.

Giuliani explained that because of the great work Trump’s attorneys did early on — providing Mueller with “1.4 million documents” and “32 witnesses” — Trump’s legal team is in a position today in which they no longer need to cooperate.

“I believe we are coming toward the end, so I’m talking to some of the people that were involved in the original part of the investigation,” he said.

Giuliani told Sean Hannity that his team had moved away from allowing the president to answer even “a few limited questions on collusion.”

“Given some of the revelations of the last three or four weeks, we’ve been driven further away from the idea of answering any questions from them. We don’t think they have a legitimate investigation,” he said.

Asked if he thought that Trump would be subpoenaed and a constitutional fight would ensue, Giuliani said, “Well then there’d be a constitutional fight.” He added, “I think we’d win it.”

Earlier Monday on Fox and Friends, Giuliani tore into Michael Cohen over his secretly recorded conversation with President Trump, and suggested someone may have tampered with the tape. “There is no doubt one of [the tapes] were cut off,” he said.

Giuliani called the disgraced former Trump Organization attorney one of the “biggest liars in America.”

“He erased them, sure,” he said, adding that the Trump legal team has “experts going through it.”

“Is this a recording of a recording? Did he cut it off at the time? Or go to a laboratory or whatever the hell he had and cut it off?” he wondered.

Giuliani said Monday that the Trump team actually knows of “183 recordings” from Cohen, but many of them involved people having nothing to do with Trump. Giuliani said the now-public Trump-Cohen tape is the only one involving the president. The others, Giuliani explained, are recordings where Cohen is speaking with third parties and describing his version of what happened in regard to payments to McDougal and adult film star Stormy Daniels, who has also said she had an affair with Trump before his election as president.

“That will give you an idea of what a scoundrel he was,” Giuliani said of Cohen.