Felipe Massa says contract negotiations on his future at Williams have stalled since Robert Kubica’s two private tests with the F1 team over the past two weeks.

After Kubica was turned down by Renault for 2018, the Polish driver has been working with Williams for a potential F1 comeback having been out of the sport since 2011 when he suffered a horrific rallying crash which left him with partial use of his right arm.

Williams has confirmed ‘productive’ tests have been completed by Kubica in its 2014-specification car at Silverstone and the Hungaroring, while in Hungary Paul di Resta also ran a one-day test to act as a comparison, which has left Massa’s future at the team under threat.

Massa is eager to re-sign with Williams for 2018 despite announcing his retirement from F1 12 months ago only to pull off a turnaround when Nico Rosberg retired as reigning champion to see Valtteri Bottas leave Williams to join Mercedes.

The Brazilian driver says “no talks” have been held since the last race in Japan but is eager to get a decision on his future by his home race at Interlagos which is three weeks away.

“No, no talks. I am was quite clear when I talked to the team, I was quite clear what was the situation and now I need to get the team to come back to me to say yes or no, white or black, good or bad, whatever,” Massa said. “The team knows 100% what I can do and what I can give and I am pretty much sure that they need that.”

Massa refused to comment on Kubica’s recent Williams tests and says he’s purely concentrating on his own performance for the final four races of the 2017 campaign.

“I have nothing to answer about that [Kubica],” he said. “I am concentrating on my job race-by-race and I am pretty relaxed jumping in the car and enjoying myself.”