Cooper Cronk’s impact on the Roosters can’t be fully measured until next season and beyond, but the superstar halfback believes the move from Melbourne has helped him become a better player.

Cronk, who will retire after his ninth grand final appearance on Sunday, has had such an influence on the Roosters and Storm that the two clubs are likely to consider creating a trophy in his honour to be awarded each time they play, similar to the Ron Coote Cup between the Roosters and Rabbitohs.

“It won’t happen in the short term, but it’s got merit longer term for sure," one senior official told NRL.com

Only Norm Provan (St George 1956-65) and Brian Clay (1954-55, St George 1957-61, 1964-66) have played in more premiership deciders and if the Roosters triumph on Sunday he will become the game’s most successful halfback by equalling Bob Bugden (St George 1956-61) with six grand final wins.

Since Cronk moved from Melbourne last year, the Roosters have been in consecutive grand finals and are aiming to become the first back-to-back premiers since Brisbane in 1992 and 1993.

Focus driving 'robotic' Cronk's grand final glory

Cronk’s influence on the Roosters won’t be truly known until he is no longer playing and the club continues to compete for premierships or slips from the top rung of the ladder they have leapfrogged Melbourne to reach since his arrival.

Besides Cronk’s retirement, their roster will be largely unchanged next season with Kyle Flanagan or Lachlan Lam expected to play in the halves alongside Luke Keary, who many believe has already become the club’s dominant playmaker.

If Keary leads the Roosters to another grand final next season, that will be viewed as part of Cronk’s legacy along with the widely hailed work ethic and attention to detail he bought from Melbourne.

Sonny Bill Williams showed Roosters teammates how the ultimate professional prepared for matches and ensured he was able to perform at his optimum each week when he led the club to the 2013 premiership, but standards slipped after his return to the All Blacks two years later.

The Storm were desperate for Cronk to stay and continue his role as "the best third wheel the game has seen" alongside future Immortals Cameron Smith and Billy Slater but he put the career of his partner Tara Rushton ahead of the club.

While Storm officials were keen for Rushton to move to Melbourne, her role as a presenter for Fox Football is based in Sydney so Cronk decided he had to leave and the Roosters swooped in the belief he could have a similar impact on the team as Williams had in 2013.

"The Roosters organisation have allowed me to have a family, get married, settle into my future here in Sydney and play football," Cronk said.