A 10-time race-winner has claimed that 'politics' are behind his team's signings as they begin to build for the future.
With half of the Formula 1 grid for 2025 still to be confirmed, pressure is growing on a number of out-of-contract stars as they look to secure a seat for next year.
Now that a quarter of the current campaign has been consigned to the history books, time is running out for the likes of Daniel Ricciardo and Sergio Perez to prove they can deliver big performances in a bid to catch the eye of potential suitors.
Should that move become reality, the Spaniard would join Hulkenberg at Sauber next season, which isn't good news for former Mercedes driver Valtteri Bottas.
What does the future hold for Bottas?
Given the Finn is out of contract at Sauber this season, it would appear he will be forced to seek options elsewhere.
In an interview with Mundo Deportivo, the 34-year old admitted that 'politics' played a key role in the team's decision to recruit Hulkenberg in particular, given Audi's ambition to bring in a German driver.
He said: "There are a lot of politics in F1, it's part of the game, we have to live with it.
"Yes, sometimes you see its good side and other times its bad side, but it has always been part of the sport because it is big business."
On rumours that Sainz is being lined up to take his spot at Sauber, he added: "It's a surprising situation based on the information that I've been receiving over the last year or so.