Michael Bay has cast an unknown actor in the new Transformers film.
The newcomer, Jack Reynor, will join Mark Wahlberg in the fourth film, due out in 2014.
The US director announced on his website: "I just hired a great new actor for Transformers 4 to star against Mark Wahlberg.
"Jack Reynor, he is an Irish kid that came to America with 30 bucks in his pocket. Pretty ballsy. Seriously who does that?
"Anyway I spotted him in a great little Irish movie What Richard Did. This kid is the real deal."
The director also dismissed reports that Transformers 4 would be a reboot.
But he said: "This movie takes place exactly four years after the war in Chicago. The story makes a very natural transition, and reason as to why we have a whole new cast," he said.
"This Transformers will feel very different then the last three. We are embarking on a new trilogy."