The family of Jarrod Mullen has reached out to NRL boss Todd Greenberg, urging him to consider reducing the former Newcastle star’s four-year doping ban.

Mullen, 30, was suspended under the NRL’s anti-doping policy this year after he tested positive to Drostanolone.

Mullen’s mother Leeann has told ABC radio she wrote to Greenberg, saying other players who committed off-field indiscretions were handed comparatively light punishments.