Jock Clear, Lewis Hamilton's senior performance engineer, is to leave Mercedes. understands Clear informed Mercedes of his decision to leave after the final race of the season in Abu Dhabi and will work a 12 month notice period before his departure.

He is expected to switch to Ferrari, with the Scuderia having announced a "restructuring" this week, axing engineering director Pat Fry and chief designer Nikolas Tombazis. It is believed Clear will take over from Fry.

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Clear has been with the Brackley squad ever since its inception back in 1999 as British American Racing, the team later morphing into BAR, Honda, Brawn and now Mercedes.

He originally joined British American Racing after acting as Jacques Villeneuve's race engineer at Williams, helping the Canadian to the title in 1997.

He later worked with Takuma Sato and Michael Schumacher, before linking up with Hamilton in 2013 after the Briton left McLaren.