Mercedes may also oppose Ferrari's plans to give teams the ability to field three cars apiece in the near future.
Ferrari president Luca di Montezemolo, who is also chairman of the Formula One Teams' Association, said after heading a meeting with colleagues at Monza on Wednesday that the issue of allowing three cars had been discussed.
Williams has already indicated that it will block the introduction of the measure, and Mercedes' Norbert Haug told a-z.ch: "This idea has not been thought through. Perhaps Ferrari is interested because they have so many drivers under contract.?
Haug is referring to the fact that, as well as being contractually obliged to both Felipe Massa and Kimi Raikkonen for next year, Ferrari has also apparently signed Fernando Alonso and remains interested in housing a Michael Schumacher comeback.
Ferrari team boss Stefano Domenicali said that, contrary to Ferrari's wishes, he was not sure the three-car regime will arrive for 2010.
"It is difficult, unless the (three) new teams take a step back," he admitted in an interview with La Gazzetta dello Sport.
Meanwhile, Haug has said that McLaren may not make its announcements about drivers for next season until after November's Abu Dhabi finale.
Amid the driver 'silly season', the speculation surrounding Mercedes-powered McLaren is rife: Heikki Kovalainen's future is unclear, and his expected successor Nico Rosberg is now linked instead with a move to Brawn GP.
"It is still very early. Perhaps we will announce our driver pairing at the end of the season, but that is not for sure," said Haug.
