Carlos Sainz still hasn’t signed with a new team for 2025 as the summer break approaches. Virtually the entire paddock would have expected him to have made his choice by now. It would seem that Sainz is holding out for an offer from Mercedes. The Silver Arrows are delaying the market as they consider their options post-Lewis Hamilton. If Max Verstappen proves to be unattainable – which looks to be the case even amid recent tension with Red Bull – then Toto Wolff is choosing between Sainz and Kimi Antonelli. The latter’s underwhelming F2 form left Wolff with some doubts but he won his first rac…