He had been linked with both Renault and McLaren, though both appeared to have fallen off the radar in the weeks prior to the announcement.
McLaren boss Zak Brown has since revealed that he had several meetings with Ricciardo, and only learned last week that he wouldn't be joining the team.
“We had a couple of meetings and we are big fans of Daniel,” Brown told Racer.
“I think he's a great guy, I think he's a great race car driver. How close we came to getting him, I think only Daniel knows the answer to that question.
“Had we been running more competitively I think that would have increased our odds.
“I think he had a strong desire to leave and I think it was probably pretty close between us and Renault, but ultimately Daniel would be best to tell you how close.
“But he was certainly someone that we rate very highly and think he's a great race car driver and a great guy.”
“I think it's thrown a spanner in the works for some other teams but we've got a plan which we are executing against which Ricciardo's move doesn't impact,” Brown suggested.
“(Red Bull) is a great racing team but I think Fernando has got what he wants to do in the back of his mind. Never say never, but I don't think it changes anything in Fernando's world.
“I'm going to keep to myself what my plans are but today's news doesn't impact anything from my perspective,” he added.
With Ricciardo now confirmed at Renault it raises a number of questions for other drivers currently on the market for 2019.