Renault team boss Cyril Abiteboul has warned Jolyon Palmer that he must begin to deliver points for the team, else he risks being replaced.
Whilst team-mate Nico Hulkenberg has scored 18 points this season, Palmer has yet to score a single point with a highest finish of 11th in both Monaco and Canada, compared to Hulkenberg's high of sixth in Spain.
Renault believes it is currently overly dependent on Hulkenberg to deliver points, which Abiteboul says is unfair on the German, and has consequently urged Palmer to up his game.
"No one is safe in Formula 1," he told Autosport. "F1 is not an environment where anyone can say loudly, 'I'm safe.'
"[Jolyon] has to deliver. What would happen [if he didn't], I don't want to elaborate on that, and even further, who would be stepping in, because that's absolutely not the point for today.
"The fact is that Jo has a car which is a points-scoring car, and he has to enter into the points. Full stop," warned Abiteboul, amid rumours Renault is considering replacing him with test driver Sergey Sirotkin after the summer break.
"Right now I feel that it's a bit almost unfair to Nico, who has to do a lot," he added. "The team is clearly very dependent on him.
"We see that there is a very substantial gap between Nico and Jo in qualifying, and in the race. We are discussing on a regular basis, obviously, with Jo to see how he can improve."
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