Horner 'ringing up pretty much every team owner'

Christian Horner led Red Bull to eight drivers' championships and six constructors' titles

Former Red Bull team boss Christian Horner is "ringing up pretty much every team owner" as he seeks a route back into Formula 1, says Aston Martin chief executive officer Andy Cowell.

Aston Martin are among the teams that have been linked with Horner.

Cowell said he had checked the situation with team owner Lawrence Stroll on Friday at the Singapore Grand Prix.

"It looks as though Christian is ringing up pretty much every team owner at the moment," said Cowell.

"I can clearly say there are no plans for the involvement of Christian in an operational or investment role in the future."

Haas team principal Ayao Komatsu said Horner had "approached" the US-based team but added: "Nothing has gone any further. It is finished."

Alpine managing director Steve Nielsen said the French team's executive adviser and de facto boss Flavio Briatore was "old friends" with Horner.

Nielsen added: "I don't know what they talk about. Everything I know is there are no plans for Christian to come to Alpine but that doesn't mean it won't happen."

Williams team principal James Vowles said Horner had not approached them.

"We're very happy with the structure we have and it's working," Vowles said. "I don't see any reason to change from that."

Horner is free to return to F1 by the middle of next year after finalising a severance package with Red Bull on 22 September.

The 51-year-old was fired as Red Bull team principal after the British Grand Prix in July.

Multiple sources at Red Bull have told BBC Sport the settlement package was worth 60m euros (£52m).