Red Bull design chief Adrian Newey is to leave the team in the wake of the controversy involving allegations about team principal Christian Horner.

Newey, regarded as the greatest Formula 1 designer in history, has told Red Bull he wants to move on, BBC Sport has learned.

The 65-year-old has been unsettled by the situation at Red Bull since Horner was accused of sexual harassment and coercive, abusive behaviour by a female employee, which Horner denies.

Red Bull and Newey did not immediately respond to requests for comment.

The British design chief has been strongly linked with Ferrari and is known to have been made an offer by Aston Martin, but he is likely to be of interest to all leading teams now his availability is known.

Newey’s contract with Red Bull lasts until the end of 2025 but he is said to believe he can negotiate an exit that allows him to work with another team from next season.

Audi’s F1 CEO Andreas Seidl has made veteran Nico Hulkenberg his first signing, the German joining Sauber from next season before the team becomes the automotive giant’s works squad from 2026. F1 Correspondent Lawrence Barretto explains why…

Seidl is under no illusions about how much there is to do to ensure Audi hit the ground running when they enter F1 in 2026 with their own chassis and power unit combination – and therefore he was keen to have experienced drivers operating at a consistently high level in his cars.

Sources say Ferrari driver and three-time race winner Carlos Sainz is top of his shopping list, Seidl rating him highly having worked with the Spaniard for two seasons at McLaren in 2019 and 2020.

For the second seat, he has long been very keen on recruiting Hulkenberg – another driver he knows well, having run him at Porsche in the Le Mans 24 Hours, with the now 36-year-old winning the famous endurance race in his one-and-only attempt back in 2015.

Hulkenberg has impressed so far this season, scoring points in three of the first five Grands Prix, and his qualifying speed has been particularly strong.

His consistency across the board is exactly what Seidl needs as he looks to morph a Sauber team currently bottom of the constructors’ championship into a competitive outfit.

Audi are known to be keen to have at least one German driver in their debut line-up – and thus Hulkenberg ticked yet another box.

And while they wait on Sainz’s decision, signing Hulkenberg nice and early delivers some stability in the interim.

Hulkenberg’s Formula 1 career looked to be over when he left Renault at the end of the 2019 campaign, the German holding the unwanted record of most races started without a podium.

He was a super-sub for Racing Point/Aston Martin in 2020 and 2022, those performances so strong, he earned a recall to F1 via Haas for 2023 after three years out of a full-time race seat.

Though the 36-year-old will have been content if he hadn’t managed to come back full-time for F1, the form he’s displayed at Haas has given him the hunger to try to significantly extend his career in the sport.

With his contract up for renewal at the end of this season, Hulkenberg and his manager opened discussions with Sauber/Audi, who were keen to talk.

Simultaneously, he started discussions with Haas about staying for a third season – while sources say he had discussions with at least one other team.

Ultimately, Audi’s chase, the strong package they were able to offer him and the chance to race for a works manufacturer – and a German one to boot – was simply too good to turn down.

Everyone loves to be wanted, especially a driver who has previously been dumped.

And Hulkenberg has a lot of respect for Seidl, knowing what he achieved at Porsche from the inside and following his success story at revitalising McLaren from the outside.

At this stage of his career, Hulkenberg will know this will likely be his last contract in F1.

Hulkenberg has signed a multi-year deal, with options worked into the deal that are believed to offer him the opportunity to race for Audi into his 40s if the partnership works.

And aligning himself with such a prestigious brand leaves the door open for an ambassadorial role when he chooses to stop racing.

With all that in mind, this was a deal too good to turn down.

Audi have a plenty of options regarding his team mate

Should Sainz choose not to accept Audi’s advances, the German manufacturer has a flurry of options.

Sources say they are admirers of Esteban Ocon, who is managed by Mercedes and is currently outperforming team mate Pierre Gasly at Alpine.

Valtteri Bottas, who is in his third season with Sauber, also remains in the frame, as does his fellow incumbent Zhou Guanyu, the Chinese driver having stepped up his game this year.

However, they all face a waiting game as sources say Audi will wait longer on Sainz before making their next step.

Formula 1’s new 24/7 streaming channel in the United States will go live later this week ahead of this weekend’s Miami Grand Prix.

In an attempt to provide more content to the growing U.S. audience of F1 fans, the new channel, operated by C15 Studio, offers round-the-clock F1 content. The subscription-free channel is ad-supported, and will allow fans to watch “F1, F2, F3 and F1 Academy race replays and highlights, full reruns of classic grands prix, and popular racing documentaries”.

The channel will go live later this week and is being distributed via services including Amazon Freevee and Pluto TV, where it will go live on May 1, and Samsung TV Plus where it will launch on May 10.

Sky Sports News understands Newey will not have to serve a period of gardening leave when he departs next year, leaving him free to join another Formula 1 team to help design their 2026 car.

Newey will not work on Red Bull's current F1 car for the rest of this season, instead putting his efforts into Red Bull's first hypercar, the RB17, before leaving Red Bull in early 2025.