But in a short statement ahead of the Monaco grand prix, Newey said: "I remain committed to Red Bull for the foreseeable future."
World champion Sebastian Vettel was also asked about Newey on Wednesday, and while stressing that Red Bull wants him to stay, he also said the Milton-Keynes based team is not a one-man band.
"He is one of the key people in the team," said the German. "There are other people too.
"It is wrong to give the credit only to Adrian, as he would tell you himself.
"We like him in our team, so yes," added Vettel, when asked if he wants Newey to stay.
"It's a story in the end. How much truth there is in it, we may find out, we may not."