Nico Hulkenberg has admitted he is on the market for 2014.
Contesting only his tenth race for Sauber since switching from Force India over the winter, the German is undoubtedly concerned not only by the Ferrari-powered C32's lack of pace, but also the Swiss team's financial problems.
"I have no idea what will happen, we're still exploring all options," Hulkenberg is quoted by Speed Week.
Many in the paddock believe the highly-rated 25-year-old is now in pole position for a move to Ferrari next year, should the fabled Italian team not renew Felipe Massa's contract.
Hulkenberg said: "My manager and I are speaking with several teams, including Sauber.
"There's nothing official yet, and anyway I'm concentrating on the current season."
It has also been rumoured Lotus, possibly to lose its number 1 driver Kimi Raikkonen, is interested in Hulkenberg.
"There are so many rumours and not all of them can be true," he insisted.
"I'd also much rather be sitting in the car than reading everything that is written about me," added Hulkenberg.