It looks like Chris Pine will fill the shoes of Jack Ryan from the Tom Clancy novels about the CIA analyst.  Paramount Pictures strongly feels having Pine on board will fire up the franchise, once again.

We all know Pine as James T. Kirk in Star Trek, the JJ Abrams-directed summer hit with a sequel on its way.

Pine is expected to come aboard the Jack Ryan film while the project gradually takes shape. The story is based on an original concept by Hossein Amini. The project is in deep development and it is unclear whether Pine would make another Star Trek before the Jack Ryan film.

(Source)