Toro Rosso remains the "only option" for Carlos Sainz jr's Formula One debut in 2015.
That is the claim of the Spanish newspaper El Confidencial, citing 'various sources'.
Recently, McLaren rubbished reports suggesting the Red Bull-backed 20-year-old might be a contender to be Fernando Alonso's teammate in 2015.
He was already in the running for a seat at Toro Rosso, but backers Red Bull appear more inclined to pair the rookie Max Verstappen with the experienced Jean-Eric Vergne.
But El Confidencial claims that Sainz's chances depend mainly on the Spanish company Cepsa, who are contemplating leaving Toro Rosso and Formula One.
"Vergne's candidacy could be interpreted as pressure on Cepsa not to withdraw from Toro Rosso," the report reads.
"Now it (Cepsa) is reconsidering its continuation to, among other things, ensure the presence of the Spanish driver.
"This weekend there will be important meetings in Abu Dhabi with options to reach a favourable agreement," El Confidencial added.
The report also said new Formula Renault 3.5 champion Sainz's management recently looked into a possible move to Lotus for 2015.