Speaking to Esporte Interativo, Marcelo insisted he knows nothing about a move to Juventus, despite speculation over his future.
Marcelo has revealed his admiration for Juventus but is unaware how the rumours of a move to the Italian team came about.
The Serie A champions have been strongly linked with the defender, who could team up again with former Real Madrid team-mate Cristiano Ronaldo at the Bianconeri.
Once a certain starter for Madrid, Marcelo has seemingly fallen out of favour this season, starting just 11 LaLiga games as Santiago Solari has instead opted for Sergio Reguilon at left-back.
While fondly recalling a previous battle against Juve legend Pavel Nedved during an interview with Esporte Interativo, the 30-year-old insisted he knows nothing about a potential switch to Italy.
Marcelo says he has no idea where Juventus rumours started
"I'd also like to know where are these rumours coming from because it's not normal," Marcelo said. "It's funny because they [the press] make pictures with a Juve shirt.
"Juve is a splendid team since the times of [Pavel] Nedved, I once played against them and he was there, it was amazing, I changed shirts with him.
"But I'm from Real Madrid, I have a contract with Real Madrid and the things that are being published, I don't know what they are [coming from], you don't know, many people don't know either and honestly, I'm a sincere man, you know it.
"If there was anything to be told, I'd say it - but nothing."
Marcelo also disclosed how Ronaldo had informed him of his intentions to exit Madrid prior to helping the club win the Champions League for a third successive year.
The Brazil international said: "We were training for the final and he [Ronaldo] said to me: 'I'm leaving."