Oscar Piastri was promoted by Alpine to fill the seat left by Fernando Alonso.
Hours before the announcement, Otmar Szafnauer was unable to confirm that Piastri would race.
In line with the commitments made by the team to the young Australian, Piastri would race.
There was no quote from the person.
The 21-year-old is known to have had conversations with McLaren in the last few weeks.
Alpine was trying to get Alonso to stay and they were also trying to get a deal to loan the reigning Formula 2 champion to Williams.
"Piastri's refusal to drive for Williams was a consideration and I was not aware of any pre-arrangement he had with McLaren, if any at all".
He said that he knows that he has contractual obligations to him. We have been doing our part all year.
We have a legal contract with him into the future with 23 and if an option is taken up for 24.
Alpine will "sit down and progress what our future driver line-up is going to be, and the choices are the same", he said.
The two-time champion had wanted a longer confirmed contract than Alpine were prepared to offer him, and that was the reason why the team was surprised by Alonso's decision to leave.
Oscar and his camp are considering their options, whatever that means, he said.
Alpine didn't respond to the questions about whether they had spoken to Webber.
Oscar is a rare talent and a bright one. We were proud to nurture and support him through the junior formulae.
Over the past four years, we have seen him grow into a driver who is capable of taking the step up to Formula 1.
He has been exposed to the team at the track, factory and testing where he has shown the maturity, promise and speed to ensure his promotion to our second seat.
The duo will give us the continuity we need to achieve our goal of challenging for wins and titles.