Hot off the global success of HBO's Chernobyl, Irish actor Barry Keoghan is in negotiations to join the star-studded cast of Marvel's The Eternals, Collider has exclusively learned. Additionally, Crazy Rich Asians star Gemma Chan is also in talks to join the comic book movie, which will star Angelina Jolie (Thena), Richard Madden (Ikaris), Kumail Nanjiani (Kingo), Salma Hayek (Ajak) and Brian Tyree Henry (Phastos). The rest of the cast includes Lauren Ridloff (Makkari), Lia McHugh (Sprite) and Don Lee (Gilgamesh). Keoghan's role remains unknown, and it's unclear whether Chan will be reprising her role …