Jack O'Connell is rumoured to have joined 300: Battle Of Artemisia.
The former Skins actor, who recently broke up with X Factor judge Tulisa Contostavlos, is said to be playing the part of Calisto in the upcoming fantasy action sequel, reported the Daily Mail.
Jack - who has appeared in Harry Brown and This Is England - is reportedly doing some sword training for the role, which will see him sharing screen time with Eva Green and Rodrigo Santoro in Noam Murro's follow-up to the 2007 film.
Jamie Blackley had previously been linked to the part of Calisto.
Gerard Butler and Dominic West, who starred in Zack Snyder's 300, are not expected to return for the sequel, which is scheduled to start shooting in Bulgaria shortly for a 2013 release.
Jack will next be seen in British thriller Tower Block alongside Sheridan Smith and Russell Tovey, having passed on a role in Beautiful Creatures.