No end to speculations on Ayyappanum Koshiyum Tamil remake cast

Ayyappanum Koshiyum, the Mollywood blockbuster had Biju Menon and Prithviraj playing the title roles and how thier egos spin out of control causing trouble to themselves and those around. The film has captivated all language movie buffs and the remake rights have already been grabbed by Kathiresan for Tamil, John Abraham for Hindi and Suresh productions for Telugu. Recently, we heard that Sasikumar may reprise Biju Menon's role in Tamil remake. But now, we hear that highly popular star sibling duo of Kollywood- Suriya and Karthi might play the lead roles in Tamil remake. If that happens then we can call it the best casting ever done. Offcial updates awaited.