Well Marvel passed on Jason Momoa (Game of Thrones, Conan the Barbarian) for the role of Drax in their Guardians of the Galaxy, but it looks like Warner Bros. might be interested in him. According to The Hollywood Reporter, Jason Momoa is in negotiations to join the cast of the Man of Steel sequel.
There is no mention of whom Momoa would play, speculation is either a villain, possibly as Doomsday, or as yet another member of the Justice League. The name Martain Manhunter has surfaced as a possibly Justice League member name, but again this is all just speculation. Man of Steel 2 (Batman Vs. Superman) is due to premiere on July 17, 2015. (Source: THR)