Red Bull advisor Helmut Marko says Daniil Kvyat will not be returning to Formula 1 with Red Bull or Toro Rosso following the decision to drop the Russian from their line-up.
Although Kvyat made a return in Austin for the United States Grand Prix at the weekend, it was purely a one-off to fill in for a missing Pierre Gasly, who had other commitments in Japan.
The former Red Bull driver, who was demoted to Toro Rosso at the Spanish GP last year in favour of Max Verstappen, was dumped in Malaysia with STR running Carlos Sainz and Gasly. Sainz then switched to Renault with Brendon Hartley taking up his vacant seat.
Speaking to Bild, Marko says confidence in Kvyat's abilities have faded and they don't believe he's right for either team going forward.
"Kvyat will not return again," said the Austrian. "We do not believe he can make the turnaround in the long term.
"Gasly and Hartley are finishing the season. Then we'll see what happens."