A former aide to President TrumpDonald TrumpThe Memo: The Obamas unbound, on race Iran says onus is on US to rejoin nuclear deal on third anniversary of withdrawal Assaults on Roe v Wade increasing MORE said Wednesday that it's "probable" that President Trump's eldest son Donald Trump Jr.Don TrumpTrump Jr. shares edited video showing father knocking Biden down with golf ball Trump: 'I can't imagine' any Republican would beat me in 2024 primary if I run Trump Jr.: There are 'plenty' of GOP incumbents who should be challenged MORE told his father about a controversial meeting with a Russian lawyer in 2016. 

"I think it's probable that that meeting with Don Jr. – I am sure Don Jr. reported to his father what they had heard," the former aide, Sam Nunberg, said on MSNBC. "I don't think there's anything wrong with that, by the way."

Trump Jr. accepted the meeting with Russian lawyer Natalia Veselnitskaya in June 2016 after he was told that she had damaging information about his father's then-opponent, Hillary ClintonHillary Diane Rodham ClintonMcConnell: Taliban could take over Afghanistan by 'the end of the year' Hillary Clinton: There must be a 'global reckoning' with disinformation Pelosi's archbishop calls for Communion to be withheld from public figures supporting abortion rights MORE

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Nunberg no longer works for Trump, and has previously admitted to fabricating stories to the news media. 

The June 2016 meeting in Trump Tower has been the subject of much controversy because of the ongoing investigation into Russia's role in the 2016 election and whether the Trump campaign conspired with Moscow to sway the presidential race.

President Trump has denied that he was told about the meeting at the time, and Donald Trump Jr. has said that he never relayed the information to his father because the meeting did not amount to anything.  

A book published in January by New York media writer Michael Wolff quotes former White House chief strategist Stephen Bannon as saying that the Trump Tower meeting was "treasonous" and that Trump was almost certainly aware of the encounter.

“The chance that Don Jr. did not walk these jumos up to his father’s office on the twenty-sixth floor is zero," Bannon said.