Robert Kubica has revealed that former F1 world champion Nico Rosberg is no longer as closely involved in his management team as he was last year when the German was at the forefront of negotiations to land the Polish driver a regular F1 seat.
The 33-year-old, a former winner of the Canadian GP in 2008, almost had his career cut short after a horrific accident at the Ronde di Andora rally in 2011 where his forearm was partially severed.
Lucky to escape the crash with his life, Kubica showed incredible courage to return to motorsport, first through rallying and last year he re-emerged back onto the Formula One scene following an absence of six years.
Although Kubica was a frequent test driver for Williams last year, it was not enough to secure a seat as, despite Rosberg's backing, he given the role of reserve driver for the 2018 season.
With Rosberg now concentrating on other interests such as his investment in Formula E, Kubica has explained why their relationship has become more distant.
"We did have a close work together at the end of last year, and we are in a good relationship, but for now, because in the end I am doing what I am doing and he is very busy and he has his family, let's say we are not working as close as we were last year, " Kubica told Motorsport.
"But we are still in touch."
The Polish driver was at pains to point out that the pair had not split as their business relationship always had a limited time frame and was merely intended to help him secure a drive for the current season.
"It is just that this period was very intense and now it's a completely different situation," he added.
"It is not a situation that Nico has been working and now is not working. It is just that the situation is that he is not as present as he was."
When pressed about the possibility of a future collaboration with Rosberg, Kubica said: "I think it doesn't depend only from my side.
"A lot will depend on the situation and also it is kind of new everything for me to be back in paddock. So we will see what the future will bring and then we'll move on."