The 25-year-old 'Band Baaja Baaraat' actress is co-producing the action thriller about a road trip gone wrong with Phantom Films.
Rajkummar, 29, says the decision to back off from the much-delayed project was mutual as he had already committed to another film and he has no issues with Anushka.
"I never signed 'NH 10' officially. I was supposed to do it. Then it got delayed. Then I moved on to other films like 'Kai Po Che' and 'Shahid'. Then I started working on another film. I can't do two films at the same time. I prefer doing one film at a time," Rajkummar told PTI in an interview on the sidelines of IFFI.
According to some reports, Anushka decided to replace Rajkummar with actor Neil Bhoopalam, who is currently a part of Anil Kapoor's '24'.
Rajkummar's last three films - 'Talaash', 'Kai Po Che' and 'Shahid' have been hugely successful. In 'Shahid', directed by Hansal Mehta, the actor received rave reviews for his sensitive and accurate portrayal of lawyer and human rights activist, Shahid Azmi, who was assassinated in 2010 in Mumbai.