When asked about that Ferrari gossip, Ricciardo told Corriere della Sera newspaper: "I would like to measure myself with new challenges some day.
"But in 2018 I will stay at Red Bull. I do not give up and I have a mission to complete," he told the Italian daily.
However, Ricciardo does agree that Ferrari's 2017 resurgence, after failing to win a single race last year, has been "crazy".
"But when Seb has the right machine and is happy, he's a devil, and he has the perfect environment now. He will be tough to beat."
As for Hamilton, Ricciardo commented: "He is a crazy talent. But this year he will have to work harder for it than in the past."
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