Audi won’t officially enter Formula 1 until 2026 as they acquire 100% of the Sauber team. But they already seem to be exerting a major influence over the Swiss team’s driver line-up. Valtteri Bottas and Zhou Guanyu, the team’s current duo, are both out of contract at the end of the season. Right now, Audi don’t seem particularly keen on retaining either driver. Bottas, who won 10 Grands Prix during his stint at Mercedes, still has a chance of keeping his seat. But the expectation is that Zhou won’t be offered an extension. The German manufacturer’s top target is clearly Carlos Sainz. Sainz is …