Carlos Sainz is one of the biggest players in this year’s F1 driver market. Nearly four months after learning that he’d lose his Ferrari drive to Lewis Hamilton, he still hasn’t made a decision on his future. Sainz holds a longstanding offer from Audi, who will take control of the Sauber team in 2026. However, he’s yet to accept it because he’s holding out for a call from Red Bull. The Spaniard started his career at junior team Toro Rosso in 2015, but rather than graduating alongside Max Verstappen, he left for Renault instead. He subsequently raced for McLaren before landing at Ferrari. But t…