"Mclaren's position on Honda negotiating with Red Bull is unknown at present"
Um, it's pretty well-documented they have the power of veto, no?
Has this ever been said by anyone official, though?
The RB -> Honda thing hasn't been seriously discussed yet because RB wasn't that interested in Honda engines until (apparently) now, so maybe there's no such thing as any veto-power by McLaren.
Maybe they have a voice, maybe they pay for exclusivity, but I don't remember anyone officially announcing any of those things to be true. But do correct me if I'm wrong in this.