Adrian Sutil has admitted that switching to the Renault team would be an "interesting" move for 2011.
The 27-year-old German said in Hungary on Friday that his future remains "open", despite having "an option" to stay with Force India next year.
Rumours have linked him with Renault, who are contemplating replacing Russian rookie Vitaly Petrov for 2011.
"That would be interested, of course," Sutil is quoted by DPA news agency.
"That (Renault) is someone you must definitely listen to if they have interest in you," he added.
Sutil said Renault is still a top team even though the ownership and team management have recently changed.
On the other hand, he is concerned that Force India's potential will be exhausted if the sport enters a period of stability.
"If the rules remain the same, then you improve only with details," said Sutil. "Then we can no longer keep up because of the expense.
"If there is a better option, where you can come forwards or go with a factory team, you have to use it," he continued.
