Four drivers line up for second Williams seat
The press release said nothing about his teammate.
It could be Russian Sergey Sirotkin, with the struggling British team perhaps reliant on his backing by the Russian bank SMP.
Another option is Robert Kubica, Williams' famous 2018 reserve driver who according to rumours has put together a $10 million sponsorship dowry for next year.
Russian Artem Markelov is another candidate, but his father was recently arrested for corruption.
Finally, Force India refugee Esteban Ocon is still holding out hope.
Like Russell, he too is backed by Mercedes, and Williams boss Claire Williams admits he is being considered.
"The list is very short," she said, "and of course Esteban is on it. It would be madness not to consider him."
However, it is likely that Williams will choose a better funded driver for 2019.
Former team driver Felipe Massa says Russell was a "great decision" by Williams.
"You just need to sign Esteban Ocon now," he told the team on Twitter. "But I guess it will not happen."
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