Fox News legal analyst Andrew Napolitano argued this week that based on newly filed court papers, special counsel Robert MuellerRobert Swan MuellerSasse: US should applaud choice of Mueller to lead Russia probe MORE could make the case that the Trump campaign had a "connection to Russian intelligence."

Napolitano was weighing in Wednesday on details from the criminal case against former Trump campaign chairman Paul ManafortPaul John ManafortPress: Should the media apologize to Donald Trump? Trump: 'Haven't thought about' pardons for Mueller targets Trump: Mueller acted honorably MORE that leaked out into the public view the previous day.

Due to a formatting error that failed to redact certain information, Manafort's attorneys disclosed in the filing that Mueller has accused Manafort of sharing polling data from the 2016 campaign with Konstantin Kilimnik, a Russian national and former business associate of Manafort who is suspected of having ties to Moscow’s military intelligence agency, GRU.

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“The prosecutors accused Paul Manafort of lying to FBI agents in violation of his guilty plea to cooperate with them and they filed their allegations of the lies under seals. We don’t know what they were,” Napolitano said during a segment with Fox News host Shep Smith.

“Paul Manafort’s lawyer’s filed their answer and they forgot to seal part of it and the part they forgot to seal was that the FBI accused Paul Manafort of lying about whether or not he gave confidential polling data at the height of the campaign to a Russian oligarch who the FBI has identified as source for Russian intelligence,” he continued. 

“This shows that Bob Mueller can demonstrate to a court without testimony of Paul Manafort, that the campaign had a connection to Russian intelligence and the connection involved information going from the campaign to the Russians,” Napolitano said.

“The question is, was this in return for a promise of something from the Russians, and did the candidate, now the president, know about it?” the legal expert added.

“And would that be a conspiracy?” Smith asked.

“Yes,” Napolitano replied. “Conspiracy is an agreement to commit a crime. The crime would be to receive something of value from the foreign person or government during a campaign. Whether or not the thing of value arrives, the agreement is what is the crime.”

“There was apparently an agreement between the campaign manager and this Russian oligarch. What the oligarch did with the material we gave him, who the campaign manager, Manafort, spoke to in the campaign, Bob Mueller has yet to reveal,” Napolitano added. 

Trump on Thursday denied having knowledge of his former campaign chief having shared polling data with the Russian associate.

“I didn’t know anything about that,” Trump told reporters before departing for a trip to the southern border on Thursday morning.