Ben Kingsley, James Badge Dale and Charlotte Le Bon are in negotiations to join Robert Zemeckis' "To Reach the Clouds" at TriStar Pictures.
Joseph Gordon-Levitt stars in this adaptation of high-wire walker Philippe Petit's memoir about his famous tightrope walk between the Twin Towers of the World Trade Center in 1974.
Dale will play his friend, Kingsley his mentor and Le Bon his street singer girlfriend.
Petit's feat was covered in 2008's Oscar-winning documentary "Man on Wire". Filming begins this Summer in Montreal.