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Kevin Magnussen will return to the Formula 1 cockpit for this week's final pre-season test as replacement for Fernando Alonso in the McLaren-Honda.

After three days in a Barcelona hospital following his crash on Sunday, Alonso was released on Wednesday afternoon, but has now ruled out of the last winter test.

"He has returned to his family's home in Spain for further rest and recuperation," said a McLaren statement.

"As a result, he will sit out this week's final winter test."

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It means that McLaren has had to shuffle its testing arrangements for the four days of Barcelona running around as it continues to push on making improvements to its new Honda-powered package.

With Alonso absent, reserve driver Magnussen has been called up to share testing duties this week with Jenson Button.

McLaren has confirmed that Button will drive on Thursday, with the running order after that to be decided in due course.

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Magnussen raced for McLaren last season, taking a podium finish on his F1 debut in the Australian Grand Prix, but Button won the battle to stay on in the cockpit when Alonso returned for 2015.

McLaren retained Magnussen in a test and reserve role instead.