Jacques Villeneuve, the last driver to win a world championship with Williams, believes his former team is "dead" after its recent struggles.
Williams currently sits at the bottom of the constructors' championship, 12 points adrift of its nearest rival Sauber. A steady slump in form has seen the former championship-winning team slip from third in the title race in 2014 and 2015 to its current position in the space of just three years.
Villeneuve, who is known for being outspoken, believes deputy team principal Claire Williams is to blame after taking control of the team in 2013.