Jarome Luai and Spencer Leniu had an early chance to reconnect in the Samoan camp, alongside Parramatta teammates Junior Paulo and Ronald Volkman.
The camp helped Parramatta's incoming recruits and current players build relationships before joining up at club level.
Leniu has left the final year of his Sydney Roosters contract to join the Eels on a four-year deal ahead of the 2027 season.
He and Luai won three premierships together at Penrith, and Luai said he was delighted by the prospect of playing alongside his former teammate again.
"I was stoked to hear that he (Spencer Leniu) signed.
Just that reignition of brotherhood and a lot of memories together.
So hopefully we can put another ring over there at Parra.
Luai said he knew discussions were happening but did not want to interfere.
"I knew behind the scenes they were talking but I think he might have sort of felt disrespected if I went and approached them about it.
Luai will spend one season with Parramatta before joining the PNG Chiefs in 2028, and is expected to help improve the club's fortunes.