Associate
I think if Nick does this it will absolutely guarantee he has no place on the grid next year with any team, even as a third driver. If Kubica hadn't had his accident Nick wouldn't have had a drive this year anyway, so it seems a bit off for him to try to sue Renault even if they are using him as a scapegoat for their slide down the grid from the beginning of the year.
Time to look at other race series' Nick.