Ty Cobb, one of President Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE's private lawyers, says in a new interview that the president is "very eager" to speak to special counsel 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 in hopes of quickly wrapping up the investigation into Russia's role in the 2016 presidential election.

Cobb said on CBS News's "The Takeout" podcast that Trump is "very eager to explain to the special counsel ... whatever responses are required in connection with wrapping up this investigation."

Cobb said there was "no reason" for the investigation to drag on — suggesting it could end in the next four to six weeks.

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Cobb also said that there has not yet been a formal request from Mueller's office to speak with the president. But he said that he is confident that an interview between the president and the special counsel is forthcoming.

Trump earlier this month said it would be unlikely that he would be interviewed in the special counsel's investigation, because neither he nor his campaign had done anything wrong.

"When they have no collusion, and nobody has found any collusion at any level, it seems unlikely that you would even have an interview," Trump said at the time.

In addition to examining Russian meddling in the 2016 election, Mueller is also looking into whether the Trump campaign conspired with Moscow in an effort to sway the presidential race in Trump's favor.

Trump has repeatedly denied that notion and has referred to Mueller's investigation as a "witch hunt" propagated by Democrats as an excuse for losing the election.