Adrian Newey is pondering his next steps after handing in his Red Bull resignation last month. The legendary designer is set to depart the world champions in early 2025. After negotiations with the team, Newey won’t have to serve a period of gardening leave. That means he’s free to join a rival immediately should he desire. And suitors will be desperate to get him through the door as quickly as possible. They’ll want him to exert a meaningful influence over their 2026 car concept as they try to nail the new regulations. Equally, though, Newey will be 66 years old by the time he leaves. While h…