Kubica's signing for Williams to be announced imminently

Robert Kubica has reportedly signed for Williams. There's no official announcement from Williams themselves, but Motorsport and Autosport have both suggested the deal has became finalised.

Kubica is looking almost certain to line-up alongside George Russell, who signed for Williams last week. Kubica will make his return to F1 after an eight-year break from the sport following a serious rally crash in 2011.

Because of the crash, Kubica has limited movement with his right arm, but that didn't stop him from wanting to make his return. This season he has been in the Williams garage as a test and reserve driver, a role which Sergey Sirotkin could well pick up.

The announcement is expected to be confirmed tomorrow.