Jonathan Rhys Meyers is in talks for a "central role" in the upcoming film The Rising, which charts the rebellion of 1916.
The Cork native met producer Kevin McCann in London to discuss his involvement in the film, which is slated for release on St Patrick's Day.
Rhys Meyers previously played the assassin that shot Liam Neeson's Michael Collins in Neil Jordan's 1996 film about the revolutionary leader.
Meanwhile, Harry Potter star Fiona Shaw is also in talks for a role in the upcoming film, with insiders saying the award-winning actress is up for the part of Countess Markievicz.
A number of well-known actors have already signed on for the film, with The Fall star Colin Morgan set to play Sean Mac Diarmada and Braveheart's David O'Hara taking on the role of James Connolly. Marcus Lamb, who played Des O'Malley in RTE's drama Charlie, is set to play Padraig Pearse.
Brendan Coyle, who plays Mr Bates in Downton Abbey, has also been cast in the film as the Chief Secretary for Ireland Augustine Birrell.
It was recently revealed that Neeson's eldest son Michael would be taking on his dad's former role as Michael Collins. It will be the first major role for the 20-year-old, who currently curates a fashion art gallery in London.
An open casting call for other parts and extras will be held in Ireland in the coming weeks.
Filming is due to begin in October and McCann has spent the last few weeks on a promotional tour in the US to "gain financial interest from investors".
Producers are looking to raise €3.5m and have already received funding from the Irish Film Board and Northern Ireland Screen.
Elsewhere, RTE's drama Rebellion recently wrapped filming and is set to air in January. The five-part series stars a host of well-known faces, including Brian Gleeson, Charlie Murphy, Sarah Greene and Ruth Bradley.
Brian said he believes the series has the potential to do well abroad, in particular with the American market.
"I like to think this will be the benchmark for the centenary. It's getting in there early to start a dialogue for the year ahead," he said.