Jolyon Palmer says he has “no explanation” for his struggle to keep up with his teammate Nico Hulkenberg at Renault so far in 2017.

Team boss Cyril Abiteboul recently gave the Briton a hurry-up, amid rumours a mid-season driver change – potentially involving tester Sergey Sirotkin or even Robert Kubica – might be on the cards.

Palmer, who is yet to score a single point this year, said the rumours are not putting pressure on him.

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