Nov.26 (GMM) An announcement about Ross Brawn's departure from Mercedes is now imminent.

Germany's normally-reliable Sport Bild says the news is coming "later this week", at the end of a period of strong speculation that the Brackley based team will install Paddy Lowe as the new boss.

Mercedes, and particularly chairman Niki Lauda, have made efforts to keep 58-year-old Briton Brawn on board in another role.

But the big rumour is he could be headed back to Ferrari, where as technical director he presided over Michael Schumacher's ultra-dominant cars of last decade.

"Let's see," Brawn told the British broadcaster Sky on Sunday in Brazil, after he was spotted meeting in Stefano Domenicali's Interlagos circuit office.

"We will advise everyone in good time, but it's a pretty exciting year next year, so let's see what happens," he added.

Asked if Brazil was in fact his 'goodbye' to F1 altogether, Brawn smiled as he insisted: "(This is) not an answer."