I think Max would have a decent chance at going almost anywhere he wanted, even if there would be existing contracts in the way almost everywhere.
But, it Max actually reached out to Ferrari, Mercedes, Aston Martin or McLaren and said he wanted to join for 2026, wouldn't every single team at least consider just making it happen?
Of course they would, it goes without saying. It's bewildering for me that Verstappen is still giving RedBull time however. He could have had all of this sorted by now but wants to stay loyal to a sinking ship.