Ace kollywood director Vasanth will join Mani Ratnam for the flick, Ponniyin Selvan, which is set on a historical background. Vasanth is familiar to Kollywood through flicks like Saththam Podathey, Keladi Kanmani, Aasai etc. Vasanth will work as the independent director who will assist Mani Ratnam in the making of the big budgeted flick, Ponniyin Selvan. As reported earlier, the flick will have Vijay in the lead role. Tollywood superstar Mahesh Babu, and kollywood star Arya will aVasanth to join Mani Ratnamso share the screen with Vijay.