Brawn against Button McLaren switch

Despite mounting speculation that Button is close to signing a contract to join McLaren, having agreed terms with the Woking-based team, Brawn is adamant about where the world champion should drive in 2010.

"Negotiations [with Button] are continuing and the reports that he has already agreed terms with McLaren are not helpful. I would be amazed if that were the case," Brawn told The Independent newspaper.

"His best future is with our team, where he has a good group around him, and there's a lot to be said for that. The logical thing would be for him to stay with us, but of course logic doesn't always prevail."

Talks between Button and Brawn stalled after the two parties could not agree financial terms for a new deal - with Button's camp adamant that he deserved a wages hike after taking a £5 million pay cut for this year.

But with Brawn's finances tight, even following its takeover by Mercedes-Benz, the team and driver could not agree on a figure before McLaren entered the equation.

Brawn CEO Nick Fry told Radio 5 earlier this week that his team would not get involved in an auction for Button's services.

"We've had discussions with Jenson on what we think is a sensible salary and this is not going to change anything," Fry said about the impact of the team becoming Mercedes Grand Prix. "We're running with a budget that is probably less than most and that's what Mercedes likes."

McLaren appears set on finalising a deal with Button, having broken off talks with Kimi Raikkonen about a deal for 2010 - which has left the Finn facing a sabbatical next year.

Mercedes GP will run Nico Rosberg in one of its cars next season, with speculation having linked Nick Heidfeld with the other seat should Button jump ship.