Nico Rosberg is first in the queue to race with Mercedes in 2017, according to team boss Toto Wolff.
Media reports in Germany have declared that 30-year-old Rosberg's current deal is definitely expiring late this year.
"Nico is part of the Mercedes family," Austrian Wolff told Sport Bild. "So he will be the first person we speak with. Then he has to tell us what he imagines also."
Shortly behind Rosberg in the queue is Pascal Wehrlein, the strongly Mercedes-backed reigning DTM champion who has been placed at Manor this year for his F1 debut.
"Pascal has been given the responsibility at a young age to lead the Manor team," Wolff said. "We will watch him closely and then decide how to proceed with his career."
Rosberg won Sunday's season-opening Australian Grand Prix, ahead of teammate Lewis Hamilton.
