According to well-sourced Spanish journalist Charly Barazal, Palou's contract extension with Ganassi requires his signature (and won't give it). I wouldn't think that's the case. But
The Race claims the same.
Meanwhile, O'Ward's contract with McLaren would have a US$ 3 million buyout clause.
Anyway, Barazal thinks that Ganassi will require McLaren some money to release Palou and swap him for O'Ward. Which means that the conflict will be solved like that... if they agree about money.