AlphaTauri's Tost shrugs off questions about Gasly and Herta

AlphaTauri team boss Franz Tost shrugged off questions about his 2023 Formula One line-up on Saturday, amid speculation American IndyCar driver Colton Herta could replace Pierre Gasly, and said Red Bull called the shots.

"I don't care which driver Red Bull gives me," the Austrian told reporters at the Dutch Grand Prix in Zandvoort.

"It's my job to educate them. That's it, basta. Whoever it is."

AlphaTauri is a sister team for Red Bull Racing and has historically prepared young drivers - including current champion Max Verstappen - for promotion to the title contenders.

Frenchman Gasly has a contract for 2023 but is a frontrunner to fill the seat at Renault-owned Alpine left vacant by double world champion Fernando Alonso, who is moving to Aston Martin next season.

Helmut Marko, who represents Red Bull's motorsport interests, told Germany's Sky television that the energy drink company will not stand in Gasly's way providing "our conditions are met".

Multiple IndyCar race winner Herta has been increasingly mentioned as a possible replacement if Gasly goes, although the 22-year-old American would require a special dispensation since he does not have the necessary 40 points for a super-licence.

There has not been a U.S. driver in Formula One since Alexander Rossi in 2015 and the sport, with three U.S. rounds next year and a fast-growing American audience, is keen to have one.

Tost said he did not know Herta, who tested a 2021 car with McLaren in July and races in IndyCar for Andretti Autosport, and had not seen him race.

Asked whether it would excite him to bring in a driver from IndyCar, he replied: "If he has a good relationship to the right pedal, yes."

Japan's Yuki Tsunoda is the team's other current driver alongside Gasly but