Oct.5 (GMM) Nico Rosberg's famous father has urged Sir Frank Williams to keep Alex Wurz at the Grove based team next year.

Austrian veteran Wurz's future in formula one is currently in doubt after a disappointing return to race driving in 2007, but Keke Rosberg - the 1982 world champion - doubted whether there is a better alternative for the Toyota powered outfit.

"You know someone better than Alex?" the Finn was quoted as wondering to sportnet.at.

"If Frank wants to change Wurz, he should have a strong alternative -- clearly stronger," Rosberg, whose 22-year-old son Nico has outperformed Wurz all season, said.

Williams, however, is potentially not short on candidates for the second seat, with Timo Glock, Kazuki Nakajima, Adrian Sutil, Tonio Liuzzi, Giancarlo Fisichella, Nelson Piquet Jr, and Ralf Schumacher all apparently on the market.

Rosberg himself has even been strongly linked with a switch to fill Fernando Alonso's McLaren seat, but in Shanghai he ruled out the possibility.

"There is no option to go to McLaren," the young German stated firmly.

"I have a contract with Williams and would like to win races with them as soon as possible."

His father-manager Keke added: "I do not assume that my son will change teams."