Legendary halfback Cooper Cronk is set to announce his retirement with the Sydney Roosters holding a press conference for the 35-year-old in a matter of minutes at 10am.

The Daily Telegraph reports Cronk told coach Trent Robinson last week.

Cronk has amassed over 400 games including Australian, QLD and NRL appearances and won premierships at both Melbourne and the Sydney Roosters.

More to come.