Red Bull have lost another big name after strategy chief Will Courtenay agreed to join McLaren. Courtenay has been with the team since they entered F1 back in 2005. He’ll take the sporting director role at McLaren, serving under racing director Randeep Singh. He’s still under contract until 2026, but his new team may hope to negotiate an earlier arrival. Courtenay will reunite with two former Red Bull engineers in Rob Marshall and Peter Prodromou. He arrives in Woking with six constructors’ titles under his belt. He won four of those in the Sebastian Vettel era between 2010 and 2013. And led b…