Justin Timberlake to join 'I'm.mortal'?

Could Justin Timberlake star opposite Amanda Seyfried in Andrew Niccol's upcoming sci-fi flick "I'm.mortal"? Apparently so, because word on the street is Timberlake was offered the lead in the movie.

Not much else is known about this for now, but Deadline says an insider with Timberlake confirmed the offer. Timberlake, who did a solid job in "Alpha Dog," will soon be seen in "The Social Network."

The movie is set in a world in which people stop aging when they hit the age of 25. Time is the most precious currency now, and the rich are immortal. Everyone else is struggling. Sounds intriguing, right?

More specifically, the plot follows a ghetto rebel who is framed for murdering a rich dude and goes on the run with a hostage (played by Seyfried). They later discover love is more important than anything...