That is the claim of Cyril Abiteboul, boss of the French carmaker's F1 project.
Now, Abiteboul told El Mundo newspaper that talks will only begin after Monaco.
"Everything will start at the end of May, shortly after Monaco," said the Frenchman.
"We are not going to put a deadline, because it's not our style. But we cannot postpone it indefinitely," Abiteboul added.
"We do not have to supply three teams," he said.
"We all know about his Red Bull contract," Abiteboul said.
"We are also all aware that, if there is a will by all parties, there is a way to end it.
"We have been talking with Red Bull about all kinds of issues for 12 years and I am convinced that there will be many occasions to talk about this matter soon," he added.
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