HONG KONG — Eros Intl. has struck a four-picture coproduction deal with Grandson Entertainment, headed by Sajid Nadiadwala, producer of last year’s hit “Heyy Babyy.”Siddharth Anand (“Salaam Namaste”) will direct two of the four pics. Saabir Khan will direct “Kambakht Ishq,” with Bollywood stars Akshay Kumar and Kareena Kapoor in the lead roles. Salman Khan is contracted to star in the fourth pic, though further details have yet to be finalized. “We are glad to join hands with Sajid Nadiadwala, with whom Eros has enjoyed a long association,” Sunil Lulla, president, Eros Intl., India, said.