Valtteri Bottas looks to have secured his future with Williams.
The Finn has been tentatively linked with a move to Renault, but the German-language Auto Bild as well as Speed Week report that a deal has been done on a new two-year Williams deal.
The reports come amid rumours that Bottas had an option in his current deal that would need to have been taken up by Williams by the end of August.
However, sources indicate that Felipe Massa's deal is less likely to be renewed, with McLaren driver Jenson Button strongly linked with a return to Grove.
"I think as we have said very clearly we are very happy with the job Felipe and Valtteri have done for us," said team deputy Claire Williams.
"I know everybody is waiting for our announcement now that lots of other teams have made theirs, but we are not ready to announce our lineup for 2017 yet.
"We are working through all our options but I hope we will be able to make that announcement shortly."
The 2016 calendar continues with the Italian Grand Prix on Sunday.
