Former champions Williams have been reduced to struggling for survival this year without any car developments, the team's Canadian driver Lance Stroll said Thursday. Speaking at a news conference ahead of this weekend's Brazilian Grand Prix, the 20-year-old Canadian declined to confirm if he was set to leave Williams and join Force India, the team purchased by his billionaire father Lawrence Stroll, next season.

Stroll is widely expected to replace talented Frenchman Esteban Ocon alongside Mexican Sergio Perez in the Silverstone-based outfit. His father led a consortium that took over the cash-strapped team in August.