According to The Hollywood Reporter, it looks like Curtis Hanson will be directing Gemini Man for Touchstone Pictures.
The script is written by David Benioff.
The film follows an older assassin who wants out of the business. His employers create a younger version of himself to kill the older one off.
The idea here is that Touchstone can cast an older actor and then a younger version of himself via CGI.
Jerry Bruckheimer will be producing.