Director Siva Kumar, popularly known as ‘Siruthai’ Siva, after the success of the film by the same name, starring Karthi, is onto another big league film. Having been roped in by Vijaya Productions for its founder, B. Nagi Reddy’s centenary year offering, Siva has been signing up actors for the yet-to-be-titled film. Ajith Kumar, who is currently completing director Vishnuvardhan’s Valai, is expected to start shooting for Siva sometime in April. Siva’s film has Tamannaah in the lead with Santhanam providing the humour quotient. A recent addition to the cast is Munish.