Robert Kubica leaves Williams at the end of the F1 season

SINGAPORE: Robert Kubica will leave former champions Williams At the end of the season, a step should bring down the curtain on the extraordinary of the Polish driver formula One Racing comeback.

The 34-year-old returned to his race this year after suffering almost fatal injuries in a small rally in Italy on the eve of the 2011 season, including a partially severed right arm.

I am looking for different opportunities. I will not continue to speak with Williams this year, he told reporters at a Singapore Grand Prix news conference.

It took a lot of time to recover and get back into the sport. I said, this year will be a destination in which I will stay. F1 ... but not at any price.

"I have to first of all do what will bring me back a bit of joy of racing. This season has been very tough from a performance point of view, but it has been also very demanding. Being back in formula One after a long time is not easy."

Williams are in the championship after 14 races with an uncompetitive car and just one point scored by Kubica in Germany after drivers ahead of him were demoted by penalties.

The Pole, a race winner with now-defunct BMW-Sauber in Canada in 2008 and once seen as a potential champion, remains the only Polish driver to have competed in the formula One championship.

Williams said they respected Kubica's decision and would announce their 2020 lineup in due course.

The British rookie and last year's Formula 2 champion George Russell is supported by the engine manufacturer Mercedes and remains with certainty. The Canadian Nicholas Latifi is considered a likely replacement for Kubica.

Latifi, who is second in the F2 championship, has put Williams in practice.

Deputy team principal Claire Williams, daughter of co-founder Frank, has already marked the 24-year-old out as a contender.

Nico Hülkenberg, who is replaced by the French Esteban Ocon next season at Renault, could also be in the frame.

The German was heavily involved with a move to Haas next year, but the US team is holding onto its lineup Romain Grosjean and Kevin Magnussen .

Polish media reports said Kubica's sponsor, Polish oil refiner PKN Orlen, wants to end his deal with Williams.

At this stage ... we are thinking about different scenarios for next season as we want to make the best choice for both parties, said Daniel Obajtek, CEO of PKN Orlen, in a statement.

"We intend to stay in formula One , strengthening the international recognition of the ORLEN brand."