Former independent counsel Ken Starr says that if he were President Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE's attorney he would advise Trump about the risks he faces by sitting down with Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE, the special counsel in charge of the investigation into Russian election meddling.

In an interview with CNN, Starr warned that Trump's counsel should advise him of the pitfalls that await him in a possible interview with the special counsel.

"This is very serious, this is not a press conference," Starr said Friday. "The risks are extraordinarily high."

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"I don't know all the facts [that Robert Mueller knows about the case] ... but I would advise him of the risks," he added.

Starr, who served as an independent counsel in Republicans' investigation into President Clinton's Whitewater and Monica Lewinsky scandals, added that there's a chance Trump could be subpoenaed, however, if he chooses not to speak with Mueller.

If he avoided a subpoena, Starr warned that Trump could face litigation and it could potentially go as far as the Supreme Court.

He said last month that a meeting between Trump and Mueller in the near future is "probable."

"He needs to, in order to round out, complete his investigation, to come to a decision," Starr said on CNN last month.

"He needs to look the president in the eye and ask the appropriate questions."

Trump's legal team is reportedly exploring the possibility that the president will sit down with the special counsel to be questioned on his firing of FBI Director James Comey James Brien ComeyBook: FBI sex crimes investigator helped trigger October 2016 public probe of Clinton emails Trump jabs at FBI director over testimony on Russia, antifa Graham: Comey to testify about FBI's Russia probe, Mueller declined invitation MORE and drafting of a statement defending his eldest son, Donald Trump Jr. Don John Trump'Tiger King' star Joe Exotic requests pardon from Trump: 'Be my hero please' Zaid Jilani discusses Trump's move to cancel racial sensitivity training at federal agencies Trump International Hotel in Vancouver closes permanently MORE, over a meeting with Russians in Trump Tower during the presidential race.

"I'm looking forward to it," the president said last month when asked if he would be speaking with the special counsel.

"I would do it under oath," he added. "I couldn't have cared less about Russians having to do with my campaign. The fact is — you people won't say this but I'll say it — I was a much better candidate than [Democratic nominee Hillary Clinton Hillary Diane Rodham ClintonWhat Senate Republicans have said about election-year Supreme Court vacancies Bipartisan praise pours in after Ginsburg's death Trump carries on with rally, unaware of Ginsburg's death MORE]."