Renault are a works team.
Also he can be their lead driver rather than RBR number two.
Neither team are going to deliver him much in the way of wins in the next 18 months.
And a RBR with a Honda engine next year, doesn't look like a Mercedes/Ferrari beating package to me.
Plus the up lift in pay probably doesn't hurt!
Ah so it’s the money you think. I think Honda and RBR will surprise everyone. Hopefully.