Reigning champion Max Verstappen has said he has not held talks with Aston Martin about a blockbuster move from Red Bull, saying the first he heard of the story was through the media.
In January, the Daily Mail reported that Aston Martin, which is owned by billionaire Lawrence Stroll, was willing to offer Verstappen a deal worth $1 billion over the rest of his career.
Verstappen has a contract with Red Bull until 2028 and last year played down rumours that he could be joining Mercedes as early as this season.
Asked about a potential switch to Aston Martin, Verstappen said he had only spoken to the company regarding a supply deal for his newly created GT3 sports car team.
"It's a lot of money," he said of the rumour. "Honestly when I read that it was the first time that I saw something like that.
"The only contact that I had with them was about GT3 for this year. That's it. There's not much to say really because there isn't anything."
Aston Martin poached top F1 designer Adrian Newey from Red Bull last year, and the engineer, who worked closely with Verstappen during his first three title victories, is due to join Aston Martin as a partner in March.
Red Bull team principal Christian Horner said he remains confident Verstappen will stay put as long as his team remains competitive.
"I know you guys [the media] have all got column inches to fill over the winter period, but a billion-dollar driver [deal] -- it would be an eye-wateringly large amount of money," he said. "But I think Max is very happy in the environment he's in.
"He's grown up in the team and has a great relationship with the team and the engineers and the technicians and everyone he works with. It's down to us to provide a competitive car and continue to give him the platform to achieve the results he has over the last few years.
New Aston Martin team principal Andy Cowell was asked directly about Verstappen joining his team on Tuesday, but opted not to answer the question directly.
"We're really lucky -- we've got Lance [Stroll] and Fernando [Alonso]. Great experience and they're on long term contracts," Cowell said.
"The key work for this team is to create a fast race car. We didn't create that for them last year and they get a lot of media pressure because of that.
"The pressure should come in our direction. We've got the job to create a fast race car and I am absolutely certain they will both deliver."