Varun Dhawan has revealed something surprising about the popular thriller ‘Andhadhun’. He said that director Sriram Raghavan had offered him the lead role in the National Award-winning film before it went to Ayushmann Khurrana. The actor admitted that he turned it down due to other work commitments, and today looks back at it as one of the biggest "what if" moments of his life.Varun Dhawan admits turning down 'Andhadhun' was a big mistakeAs reported in Mid-day, Varun opened up about how the script had come to him first, but he had to turn it down due to prior work commitments. He later understood how big a mistake it was to let go of such an opportunity. However, Varun has nothing but good things to say about the film and the massive impact it had on Ayushmann’s career.Kangana Ranaut was also considered for a key role in 'Andhadhun'There is also an interesting story behind the casting of ‘Andhadhun’. Kangana was reportedly thought of for an important role in the film before the final cast was decided. In the end, Tabu and Radhika Apte joined Ayushmann in the film. Out of everyone, Tabu's performance got the most attention and was loved by critics and audiences all over.'Andhadhun' became one of the best thrillers in Indian cinema‘Andhadhun’, which released in 2018, turned out to be a massive hit with both critics and audiences. The film won hearts for its nail-biting story, shocking twists and brilliant performances. Ayushmann Khurrana's role as a visually impaired pianist trapped in a dangerous web of crime was so powerful that it fetched him the National Film Award for Best Actor. The film is now widely regarded as one of the best thrillers that Indian cinema has produced in recent times.Varun Dhawan proves his mettle with 'Badlapur', 'October' and 'Sui Dhaaga'Over the years, Varun Dhawan has done both big commercial films and more serious, performance-based movies like ‘Badlapur’, ‘October’ and ‘Sui Dhaaga’.