Carlos Sainz Jr. has multiple potential options for his future in Formula 1, including Aston Martin, Mercedes, Red Bull, and Audi.
Aston Martin seems to be the best fit for Sainz Jr. considering their competitiveness and long-term potential.
Mercedes is a strong option, but Sainz Jr. is likely third choice behind Kimi Räikkönen and Fernando Alonso.
Joining Red Bull and reuniting with Max Verstappen could be beneficial for both drivers, but Red Bull might not be a long-term choice.
Audi, despite their interest in Sainz Jr., seems like a risky move due to their starting position and the time it might take to become competitive.