Will Barrichello return to Formula One?

Many rumours about a return of the Brazilian racing driver Rubens Barrichello occured in the last few days. Obviously the ex-Ferrari driver is interested to race for Sauber next season which would make him a big contender for his compatriot Felipe Massa.
Massa is also seeking seeking a cockpit after it was announced that his former team-mate Kimi Raikkönen will replace him to join Fernando Alonso next season. The vacant place at Lotus could be an option, but Nico Hülkenberg seems to have a better chance of getting the seat.

So Sauber would be the second choice for the current Ferrari driver.
Brazilian media reports that Barrichello would bring a two-digit-million dollar amount to Sauber.
Another rumour is that he could even drive at the Brazilian Grand Prix this season for the Swiss team.

He sometimes mentioned that he wants to have "a last race" where he will know if it's the last one.
Williams didn't give him that chance in 2011...