Christian Horner says Red Bull would allow a rival team to buy Carlos Sainz out of his current contract if the price is right.
Now in his third year at Toro Rosso, Sainz has made no secret of his desire to move to a bigger team and was in trouble with his employers at the Austrian Grand Prix after claiming he was unlikely to remain at the Red Bull junior team next year.
Horner has ruled out promoting Sainz to Red Bull while Daniel Ricciardo and Max Verstappen are still under contract, meaning the Spaniard will spend at least one more year at Toro Rosso as things stand.