Red Bull team principal Christian Horner has refused to confirm whether Fernando Alonso will replace Mark Webber next season.
The world champions are currently looking for a new driver after Webber announced that he would be leaving Formula 1 when the current campaign is over.
When asked if Ferrari driver Alonso is in contention to join Red Bull, Horner told Sky Sports News: "Any conversations with any driver remain confidential but of course, there has been quite a few drivers who have expressed an interest in the seat as you can imagine.
"Is Alonso available? You ask him. We are going to take a bit of time to make the right decision. We have some great options and we don't need to be in a rush."
The season continues on August 23 with the Belgian Grand Prix.