Esteban Gutierrez has admitted returning to Ferrari is an option for 2017.
The Mexican, who has failed to score a point all year, is disappointed to have been dropped by the new American team Haas after one season.
He is still linked with one of the Manor seats for 2017, but admits that his options to race are limited.
"My biggest mistake was to focus too much on achieving good results and not enough on dealing with the situation," Gutierrez, referring to his diminishing options, said in Abu Dhabi.
"I take the responsibility for it. I was not aware of what was happening around me."
Still, he said he has "a few possibilities" for 2017.
One of them is returning to Ferrari as third driver.
"The relationship has continued to be very positive, so this is one of the options," he said.
"But I must say, honestly, I have nothing confirmed at this time. I will keep working hard to put things in place," he added.