Sergio Perez is still on the sidelines when it comes to next season, holding back from committing to Force India for a fifth season while he weighs his options for the future.
The Mexican turned down an offer from Renault last year, but believes the drivers' market looks alot more interesting this summer.
Speaking to Spanish daily Marca at Silverstone, Perez said he did not want to jump the gun on deciding the future direction of his F1 career.
"It's too early to talk about it," said Checo.
"But for now I have no contract with anyone next year."
The Mexican's only certainty is the type of engine a driver needs to have in the back of his car in order to win in Formula 1.
"Today we know that in Formula 1 you can only win with Mercedes or Ferrari.
"Ferrari is perhaps the best team, but obviously we have to see what the possibilities are. Probably in August or September I will have a clearer picture."
Recently, Alonso said the 2018 market is actually more wide open than it appears on paper, and Perez does not disagree.
"There are many options this year," he admitted.
"Probably more than in previous years. It will be an interesting market because there are many possibilities."
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