Bernie Ecclestone says he does not want to rush the decision to reinstate the Bahrain Grand Prix despite organisers saying they are ready to host the event.
Ecclestone said he would be happy to have the race back in the calendar but admitted another grand prix would have to be moved in order to reinstate Bahrain.
And he fears there would be trouble if one race is moved and then Bahrain is unable to host the event.
"I think if they are happy to run the race and they are confident they can run the race, it means we have to change for somebody else," said Ecclestone on Saturday.
"We are happy to do it. But what we don't want to do is change and then suddenly find that something unfortunately happens and we are in trouble."
When asked if he had spoken to the Brazilian GP organisers about a possible date change, he said: "I have spoken to a lot of people."
The Formula 1 boss also said he would like the Turkish Grand Prix to stay in the calendar next year, despite doubts about the future of the event.
"I would like to stay here. I brought the race here. I got all this constructed so I don't want to leave. I am seeing some ministers tomorrow. Then we will see."
"Until I have spoken to the people in question there is no point making any silly statements."