State of Origin front rower Daniel Saifiti has signed a three-year contract to become a Dolphin.
Saifiti has left Newcastle after 183 NRL games and will now become a cornerstone of the Dolphins' pack.
It is a huge boost to the club's forwards stocks forwards, as Saifiti signs to work again with incoming head coach Kristian Woolf.
The pair have history with Woolf a former assistant coach and interim head coach at the Knights.
Dolphins' chief executive Terry Reader said 28-year-old Saifiti was a perfect fit for the club as they aim for another year of improvement in their third season in the NRL.
"We are very eager to see what Daniel Saifiti is going to bring to our club," said Reader.
"It is probably impossible to replace someone who has had the amazing career of Jesse Bromwich, but we know we have done extremely well in bringing in Daniel to add to our depth.
He is a representative player, he is tough, aggressive and a hard worker - all the things the Dolphins pride themselves on being.
"We can't wait to see him in our colours next year and are excited about what he will add to our already formidable forward pack."
Saifiti has played seven Origin games for NSW and previously represented Fiji at Test level.
He will join the Dolphins when pre-season training begins in November.