Fernando Alonso could be confirmed as a Ferrari driver as early as next weekend's Japanese Grand Prix.

The worst-kept secret in Formula One appears as if it will finally be revealed within the next seven days.

Alonso and Ferrari have been kept waiting whilst the outgoing Kimi Raikkonen has resolved the destination of his own future.

The Finn, who has a year remaining on his Ferrari deal, is poised to return to McLaren with whom he spent five seasons from 2002-06.

Alonso, speaking after giving Renault their first podium of the year with his third-placed finish in yesterday's Singapore Grand Prix, said: "This doesn't change anything.

"I made a decision already...and soon we will know."

Renault's temporary managing director Jean-Francois Caubet has indicated the double world champion is on his way.

"Renault will remain his family. We will miss him, but he will miss us," said Caubet of the 28-year-old Spaniard.

Ferrari boss Stefano Domenicali, meanwhile, has suggested all the speculation could be brought to a close at some point in Japan.

"I think that as soon as we are ready we will let you know. We don't want to wait too long," said Domenicali.

Referring to the possibility of an announcement at Suzuka, he added: "It is a possibility, but it is not guaranteed."

The seat left vacant by Alonso will then be filled by Robert Kubica from next year, with the Pole to leave BMW Sauber.