Former Renault boss Flavio Briatore has expressed sorrow over Robert Kubica’s apparent failed comeback to Formula 1. The Pole has been working throughout 2017 to make a return to the grid after a life-threatening rally accident in 2011.

After a number of tests with Renault, the French team decided to sign Carlos Sainz for 2018, leaving Kubica to instead focus on a Williams drive. However, it is now believed that GP2 race winner Sergey Sirotkin is set to be announced as Felipe Massa’s replacement.

“I’m very sorry that Kubica did not manage to convince Williams,” Briatore said to Speed Week.

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