Emma Raducanu is working with a new coach as she heads towards the 2023 season, reports said on Friday.

The 2021 US Open winner, who turned 20 in November, has had a growing list of coaches and is seeking the right formula to make an alliance successful.

She has turned for now to German Sebastian Sachs, a 30-year-old who previously worked with Victoria Azarenka, as a member of the Belarusian's team, before becoming the main coach of Julia Goerges and latterly Belinda Bencic.

Olympic champion Bencic recently appointed Dmitry Tursunov, who had been working with Raducanu, and Sachs has headed in the opposite direction by joining up with the British youngster.

As well as Russian former ATP top-20 player Tursunov, Raducanu has had coaching spells under the tutelage of Nigel Sears, Andrew Richardson, Torben Beltz and the Lawn Tennis Association's Iain Bates in the past two years.

Raducanu and her team have yet to formally announce Sachs' role, but reports have indicated he has been with her this week in Abu Dhabi. Her management have yet to confirm whether this is a trial or a full-time appointment.

The one-time grand slam winner had a match on Friday against Ons Jabeur at the Mubadala World Tennis Championship, an exhibition event, losing 5-7 6-3 10-8 to the 2022 Wimbledon and US Open runner-up.

After parting company with Raducanu, Tursunov said getting the best out of the Briton would be "minimum a one-year project but... probably a two-and-a-half-year project to be on the safe side", and reasoned that her game remained "very raw".

"It's going to take some time, but as I said to her and to pretty much everyone on her team: I think you just need to have one voice and just try that for a bit," Tursunov said.

Raducanu has not reached a final since her dazzling Flushing Meadows victory, and she finished the 2022 season at 76th in the WTA rankings.

Emma Raducanu has been urged to slow down the churn of coaches by her side as Russian Dmitry Tursunov claimed he walked away from the British player because of "red flags".

Tursunov, a former top-20 player and seven-time title winner on the men's tour, said Raducanu needs to listen to "one voice" and see where that takes her, after he became the latest coach to part ways with the former US Open winner.

It emerged in early October that Tursunov had called a halt to working with Raducanu, and he has taken up a role with Swiss player Belinda Bencic instead.

Tursunov told tennismajors.com how "emotionally" he had wanted his trial period with Raducanu to become permanent, insisting he saw rich potential in the 19-year-old, but he suspected there would "be problems later".

Former Davis Cup winner Tursunov did not specify who or what he saw as being a stumbling block to working with Raducanu on a permanent basis.

"I was walking away from Emma regardless of whether there was another [player] available or not," Tursunov said. "We didn't agree on the terms and there were some red flags that just couldn't be ignored."

Raducanu turns 20 in November. As well as Tursunov, in the past 18 months she has worked with Nigel Sears, Andrew Richardson, Torben Beltz and the Lawn Tennis Association's Iain Bates.

Her growing list of former coaches is notable and the focus on that factor could influence those Raducanu wishes to work with in the future.

Tursunov said Raducanu was "minimum a one-year project but... probably a two-and-a-half-year project to be on the safe side", and reasoned that her game remained "very raw".

"It’s going to take some time, but as I said to her and to pretty much everyone on her team: I think you just need to have one voice and just try that for a bit," Tursunov said

He said he "stuck around" after a trial around the US Open and was looking for assurance that, if taken on, he would be given time to work towards long-term goals.

"But of course, with her coaching situation, there's now a thought going through every coach's mind," Tursunov added.

Raducanu has not reached a final since her dazzling Flushing Meadows victory, but Tursunov has no doubt about the talent of a player he describes as "absolutely great" and "hungry to improve".

There have been just four quarter-final runs in the wake of her September 2021 triumph in New York, with Raducanu only converting one into a semi-final appearance

Tursunov, 39, says Raducanu "has a tremendous upside", but he also issued a warning, adding: "The ingredients are very good, but you can still mess it up."