St.Helens R.F.C. has secured the signing of Sean O’Sullivan from NRL side Canterbury-Bankstown Bulldogs ahead of the 2027 season!

The 28-year-old half-back makes the move to the UK and is an exciting addition to both the Saints and the Super League competition.

A playmaker with experience from several NRL clubs, O’Sullivan made his debut in 2018 with the Sydney Roosters before spells with the Brisbane Broncos, New Zealand Warriors and Penrith.

Whilst at the Panthers, he caught the eye of many as he deputised alongside Nathan Cleary in 2022 as Penrith won their second of four consecutive NRL titles. He also played a key role in Penrith’s New South Wales Cup-winning team that year.

O’Sullivan then moved on to join the Dolphins for their first three seasons as an NRL team, before joining the Bulldogs in 2026.

O’Sullivan becomes St.Helens’ third recruit ahead of the 2027 season under new Head Coach Kevin Walters, with Solomona Faataape and Christian Tuipulotu also joining the Saints.