After sitting out the first race of the season in Melbourne with a lower back injury and a recovery period in Indonesia, the 25-year-old Finn has arrived in Kuala Lumpur.
He will be at the Sepang circuit today (March 25 2015).
'FULLY SUPPORTIVE'
It emerges, however, that Williams has engine partner Mercedes' reserve driver Pascal Wehrlein on standby, should Bottas be declared unfit to race.
The team said: "We're fully supportive of Valtteri's determination to race in Malaysia but he will need final approval from the doctors on Thursday."
Bottas' manager, Didier Coton, was confident. "Valtteri is in very good shape," he told the BBC.
"He will have to take the medical, which I expect him to pass, but I don't see any reason why he shouldn’t pass - he tells me he is back to normal."
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