The Chicago Sun-Times reported that the Marlins and White Sox discussed the possibility of trading 20-year-old slugger Mike Stanton for Guillen, who has since opted to remain the manager in Chicago for the 2011 season.
A source on Friday, however, told MLB.com that talks of dealing Stanton for Guillen "never happened."
White Sox general manager Kenny Williams also disputed the report on Friday.
"False," said Williams in definitive tones when asked about the column, before expounding on the matter a bit more. "No. 1, you can't talk about another team's player.
"That's tampering. All I can say is the report isn't completely accurate."
In September, it was no mystery that before Guillen decided to stay with the White Sox that the Marlins had him on their short list of managerial candidates.
The Marlins' third-base coach in 2002-03, Guillen remains popular with Florida's organization.
Guillen is signed with the White Sox for 2011. After that, it is unclear if he will remain in Chicago.
The Marlins have yet to name their manager for 2011. Team president David Samson said on Tuesday that a decision is expected after the World Series.
Edwin Rodriguez, who took over for Fredi Gonzalez on June 23, did a respectable job, guiding the Marlins to an 80-82 record with an injury-plagued roster. The team was 46-46 under Rodriguez, who continues to be a candidate.
There is speculation that the Marlins may end up bringing Rodriguez back on a one-year contract, and then re-evaluate their situation. In 2012, the Marlins move into their retractable-roof ballpark, and perhaps then Guillen may again surface as a candidate.
Guillen, an analyst for FOX during the World Series, confirmed to the Sun-Times before Game 2 on Thursday that he had tension with Williams. The Marlins were granted permission to interview Guillen, but no conversations occurred.
"I never talked to the Marlins. I never did," Guillen told the Sun-Times. "I hear it every day. I live in Miami. One thing I know, they had permission to talk to me. But in the meantime, I'm happy to be with the White Sox. I wanted to be with the White Sox in 2011. I hope I'm going to be with the White Sox for more than that."
Stanton, meanwhile, has been considered untouchable for several years. The power-hitting outfielder belted 22 home runs -- the most of any rookie in 2010.
Because he has been one of the top prospects in the game for years, Stanton's name often is floated around in trade talks.
A few years ago, the Red Sox sought Stanton before they ended up trading Manny Ramirez to the Dodgers as part of a three-team deal. And in 2009, the Padres were seeking Stanton in a package of players that would have brought Adrian Gonzalez to Florida.
On Tuesday, Samson noted that the Marlins awarded Cody Ross to the Giants on waivers in August to make room for an outfield of Logan Morrison in left field, Cameron Maybin in center field and Stanton in right field.
"This was an absolute baseball move where we wanted to get Mike Stanton playing right field," Samson told reporters on Tuesday. "Mike Stanton is our future, and our present. At that time [Ross was let go], we felt we were going to be around a .500 team. Any realistic chances of making the playoffs had faded. So it was time for Cody to go."
Joe Frisaro is a reporter for MLB.com. Follow him on Twitter @JoeFrisaro. This story was not subject to the approval of Major League Baseball or its clubs. This story was not subject to the approval of Major League Baseball or its clubs.