Paddy Lowe has left his role as technical boss of Mercedes.
Mercedes have confirmed Lowe has left the team and he is expected to join Williams once contractually free to do so.
“I have had a fantastically successful and enjoyable three and a half years at Mercedes working with an incredible team of people,” said Lowe. “I am now looking forward to a new challenge and wish everyone well at Mercedes.”
He will be replaced by former Ferrari technical director James Allison, whose deal was signed some months ago, sources say, but is not yet confirmed.
Toto Wolff, Mercedes’ motosport boss who helped recruited Lowe from McLaren in 2013, paid tribute to his departing colleague.
“Paddy has played an important part in Mercedes success during the past three and a half years and we thank him for his contribution to this significant chapter in Mercedes’ motorsport history,” said Wolff.
“Success in Formula 1 is not about single individuals but about the strength in depth and technical capability of an organisation.
“We have the talent in place to continue our success of recent years and we plan to build upon it in 2017 and beyond.”
Lowe is set to take on a role heading the technical side of the entire Williams group, including the F1 team.