Valtteri Bottas' manager says the driver "wants to commit" to Williams as he has unfinished business with the team.
Although the Finn has been linked to Ferrari in recent times, both years the Scuderia opted to extend Kimi Raikkonen's stay.
With that door firmly shut for another season, manager Didier Coton says his driver is looking to extend his time with Williams.
"Valtteri has been very adamant about his commitment towards Williams since the beginning of this season, especially because of the change in the regulations for next year, and the trust he has in them," Coton told Autosport.
"There is a bit of an unfinished story between those two, and he wants to commit as much as he can to the team.
"He is in F1 to win, the team, of course, has the same objective, and both are working hard to achieve it.
"Williams is a great team, with a lot of potential.
"They have demonstrated in the past two years what they can do, and there is more to come.
"And if I look at Valtteri's commitment towards the team, the team should be happy to have him."
Coton, who is taking a back-seat role in Bottas' latest contract talks after the 26-year-old said he wanted to be more hands on, added that there is no rush for the parties to sign on the dotted line.
"He has taken a lead on that, and he knows we are behind him at all times," he said. "There is no rush [in terms of 2017 negotiations]. It's not for me to predict."