Sebastian Vettel is to leave Ferrari at the end of the year after contract talks between the two, broke down with no agreement.

The move, which is expected to be officially announced imminently, throws the future of the 32-year-old four-time world champion into doubt.

Spaniard Carlos Sainz, currently a McLaren driver, is among those who have been linked to take Vettel’s place.

F1 critics point out if Sainz leaves McLaren, one option for the team is Daniel Ricciardo of Renault.

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