Bruno Senna says his future in F1 is in doubt after he lost his Renault seat to Kimi Raikkonen and Romain Grosjean.
The Brazilian driver raced for the French team in the second half of the season and scored two points. Senna has been recently linked with Williams and was expected to race alongside Pastor Maldonado.
"Despite some rumours, my situation remains the same as before," Senna wrote on his Facebook page. "I'm still not confirmed with any team and still battling for a place in F1. Let's keep fighting!"