Former NRL star Frank Pritchard is reportedly fighting for his life in a Sydney hospital as he battles complications from COVID-19.

Nine.com.au reported that Pritchard, 38, was on life support.

Big forward Pritchard played for Penrith, Canterbury and Parramatta in the NRL and Hull in the English Super League as well as playing 27 Tests for New Zealand and eight for Samoa before retiring in 2017.

Canterbury football general manager Phil Gould said on Twitter: "Hearts and prayers are with former Bulldog Frank Pritchard who is in hospital battling Covid.

We send all our best wishes for a full and speedy recovery. Our love to Frank's family and friends."