After several months of speculation, Carlos Sainz has finally decided to join Williams on a multi-year deal from the 2025 Formula 1 season. The Spaniard has been a driver in demand since Ferrari announced it would replace him with Lewis Hamilton, with Williams team principal James Vowles admitting that it took several months of convincing Sainz that their project is the most competitive from his options. It will be the first time he has gone to a team that is not as competitive as his current one, largely because there are limited spaces in the top four teams. Williams has enjoyed a resurgence…