Organisers of the Belgian grand prix at Spa Francorchamps say they want to renegotiate their contract with Formula 1.
Last year, race promoter Spa Grand Prix signed a new contract with Liberty Media for three more years until 2021.
"It is a good agreement that ensures an event that promotes the Wallonia region on a global scale," said Walloon economy minister Pierre-Yves Jeholet last year.
But L'Echo newspaper claims Liberty Media's signing of a race deal at nearby Zandvoort changes things.
The report said Spa Grand Prix, paying over EUR 20 million per race, recorded a EUR 7.5 million loss last year.
L'Echo said the contract signed by Spa Grand Prix last year included a clause that allows for a renegotiation if Liberty inks a deal for a Dutch GP.
"If we do not renegotiate the contract now, the deficit will only increase by millions of euros," a source at the Spa promoter said.
The newspaper said Spa Grand Prix president Melchior Wathelet wrote to Liberty Media a few days ago to remind Chase Carey of the Dutch GP clause.
"We must re-open discussions on the financial conditions because it necessarily prejudices us," the source added.