"I would love to direct him (Bachchan). I have a script... I am working on it hopefully by year end I will be done. Then I will approach him," Hirani told reporters at an event here.
"I did direct him in two advertisements. I did feel hesitate to tell him anything but he is good at what he does. It is difficult to direct him but I am looking forward to work with him," the 52-year-old helmer said.
Hirani was speaking at the teaser launch of "Wazir", which he has edited. The film has been directed by Bejoy Nambiar.
Hirani also revealed that he would soon start work on his next film -- a biopic on Sanjay Dutt.
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"I am still writing the script... We are working on it. Next year we will shoot," he said.
"As of now I have only spoken to Ranbir...Not met anyone yet for the casting," Hirani added.