Stake F1 Team Sauber ace Valtteri Bottas is ‘positive’ that Lewis Hamilton will achieve one thing when the Mercedes driver joins Ferrari on a multi-year contract from 2025. The Scuderia have signed the 39-year-old to replace Carlos Sainz next year before the 2024 F1 season has even started. Hamilton triggered an escape clause in his contract at Mercedes to land a drive at Ferrari. Sainz was already set to be out of contract in Maranello after 2024. A move to Maranello marks a big step for Hamilton, who has driven Mercedes-powered cars since his debut in F1. The German giant powered the McLaren…