Megastar Amitabh Bachchan has been signed by director Shoojit Sircar for his next film. Shoojit and Bachchan worked together in Piku, which was a huge hit. Now, the two are again coming together for a project that would be produced by Shoojit. ???We have signed Amitabh Bachchan for a film that I would be producing. We share a great relationship and it???s always an honour to work with him. It is going to be a Delhi based film,??? Shoojit told a news portal, without divulging much details about the project.