Last Updated: Wed, 08 May 2013 17:12
Lotus have moved to appoint Nick Chester as their new technical director following the surprise departure of James Allison.
Allison, who is regarded as one of the most highly-rated design engineers in Formula One, had been offered a role with McLaren, which he rebuffed, while Ferrari, Williams and Mercedes are all thought to be interested in adding him to their team.
It is not known where Allison will be going, although his former team Ferrari are thought to be favourites to secure his services, with Lotus moving to promote Chester from his role as head of vehicle performance to replace him.
Team boss Eric Boullier told BBC Sport: "Nick is already directly involved with this and next year's cars, ensuring a smooth transition which has been under way for some time."
He added: "He assumes his new position at a tremendously exciting time for the sport. The 2014 technical regulation changes present many challenges, while our current position of second place in both the constructors' and drivers' world championships mean we cannot lose sight of this year's development battle.
"Nick really has his work cut out, but we know he is more than capable of handling the tasks ahead."
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