New world champion Nico Rosberg this week did not want to comment on the latest rumours surrounding his team mate Lewis Hamilton.
The French Grand Prix will return to the Formula 1 world championship in 2018 after a 10-year absence with the race to be staged at the Castellet circuit, sources said.
Lewis Hamilton shrugged off speculation about his Mercedes future by taking part in testing on Tuesday - only to quit early because he felt unwell, reports said.
The Italian Grand Prix will remain at the Monza circuit for at least another three years.
Newly-crowned F1 champion Nico Rosberg downplayed Mercedes team mate Lewis Hamilton's tactics to foil his chances at the Abu Dhabi GP.
World champion Nico Rosberg says Formula 1 should "drop" the current discussion about team mate Lewis Hamilton's tactics in Abu Dhabi.
Nico Rosberg and his equally famous father are not joining in the criticism of Lewis Hamilton following the 2016 title finale in Abu Dhabi.