Webber hopes to stay at Williams in 2007

"There's a lot of unfinished business here I think," the driver, one of several managed by Renault team principal Flavio Briatore, told Reuters when asked about his Formula One future.

"I'd just find it better if I could make it work here, that's the natural fit.

"It always seems greener somewhere else and then the timing changes and then Williams are quick next year and I'm not here and I've been through two pretty tough years. We could still have a good finish to the year, but it hasn't been easy."

Former world champions Williams have an option on the 29-year-old, whose contract expires at the end of the year, that must be exercised within the next few months if it is not to lapse.

Webber, who was linked to Toyota among other teams before he joined Williams from Jaguar at the end of 2004, has scored six points for the Cosworth-powered team in five races but has an impressive new teammate in German rookie Nico Rosberg.

Rosberg, son of 1982 champion Keke, has twice finished in the points including seventh on his debut in Bahrain.

"I think I've done a better job for the team this year (than last year), I feel much better with the tyre changes," said Webber.

"But it's up to Frank (Williams). I hope he likes what he's seen so far and I still think I'm one of the good guys out there, I keep my head up and keep going."

The next race is Sunday's Spanish Grand Prix, where Webber finished sixth last year and where Rosberg had his first test drive in a Formula One car as a 17-year-old in 2002.

Williams will be bringing mechanical updates, which they say should improve qualifying pace, as well as new hydraulic parts to prevent any recurrence of the problem that forced Webber to retire at the Nurburgring last weekend.