Sep.21 (GMM) Alex Wurz says he has reached an agreement with Sir Frank Williams not to comment on his future in formula one.

There has been much speculation about the Austrian veteran's plans for 2008, as Williams considers whether or not to extend his contract to race alongside Nico Rosberg.

"Frank and I have an agreement that we won't comment or even hint about what I will do after the 2007 season," Wurz, who has struggled to match Rosberg's pace this year - particularly in qualifying - said.

"We're in dialogue, of course, but on a very confidential basis, so I would like to stick to this and not comment any further.

"In the end, the situation won't be anything magic or complicated. My ex-team boss would say, 'Let the world know when it's appropriate'," the 33-year-old said, in an apparent reference to his long career as a test driver for Ron Dennis' McLaren team.

Wurz added: "I wouldn't use his exact words, but I'll talk when it's time to do so."