Jul.24 (GMM) 1997 World Champion Jacques Villeneuve tipped former champions Lewis Hamilton and Sebastian Vettel to leave their current teams.

"Lewis Hamilton will not be at Mercedes for long," he told Sport Bild. "Everyone in the German team wants a German to be world champion.

The public is already changing its opinion of Vettel. Jacques Villeneuve

"Lewis was only brought in to make Nico (Rosberg) even better."

As for quadriple title winner Vettel, Villeneuve said: "Sebastian has to leave Red Bull.

"The public is already changing its opinion of him, as in a middle class car, he is starting to look like a middle-class driver."