Former F1 World Champion Nico Rosberg has said that Sir Lewis Hamilton will need to "find some magic" in qualifying after the Mercedes driver struggled to keep up with title rival Max Verstappen in the final practice session of the French Grand Prix.
Rosberg said that part of the reason for his former teammate's gap to Bottas was probably due to Mercedes opting to swap the two cars' chassis ahead of this race.
"Maybe it's down to the swapping of the chassis. Because he has Lewis' chassis here for this weekend, so maybe as a result of that he has found a lot of form," he said on Sky Sports following the session.
Asked if Hamilton would need to resort to extreme measures to close the gap to the top two, Rosberg said that the team would have to try something given that the current deficit was so large.
"You don't really want to be in that situation, but that's probably what they will have to do," he said.
"They are miles away, so let's see if they can find some magic."