Palmer pushing to keep Renault seat
The Briton has scored zero points this year while his teammate Nico Hulkenberg amassed a tidy tally of 26.
"Honestly I have no idea who it will be," Hulkenberg said at Spa.
Palmer is not writing off his chances of turning his 2017 season around.
"Last year the second half of the season was better than the first, and that's what I need now," he said.
"I know I can do it and the car is now more competitive than before. So that's what I have to do.
"The situation is the same for me as it was last year, when I also did not think about the following season but instead concentrated on racing and getting good results," Palmer added.
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