Crichton, 21, made his debut for South Sydney in 2016 and has signed a three-year deal with their arch rivals, the Sydney Roosters, commencing in the 2019 season.

Crichton, 21, made his debut for South Sydney in 2016 and has signed a three-year deal with their arch rivals, the Sydney Roosters, commencing in the 2019 season.

He had his middle finger amputated in December after seeking advice from former Blues great David Gillespie, who "got his cut off and played ten years with it."

He had his middle finger amputated in December after seeking advice from former Blues great David Gillespie, who "got his cut off and played ten years with it."

"The cartilage had died in it, so it got fused and four fusions later, it's broken four times," Crichton told 9NEWS.

"The cartilage had died in it, so it got fused and four fusions later, it's broken four times," Crichton told 9NEWS.