Newcastle Knights Jersey Flegg coach Scott Dureau is currently undergoing chemotherapy.
A former halfback, Dureau made his NRL debut for the Club in 2007 and played the bulk of his professional career in France.
He spent four years with the Catalans Dragons.
After learning of the the 32-year-old's fight, the Dragons faithful paid tribute to the champion during their game last weekend.
Dureau wrote: 'Incredible gesture from catalan fans last night.. Catalans will always have a special place in my heart. ❤️❤️. Thank you !!'
Dureau wrote: 'I don’t post things very often but this truly inspired me.. 💪🏼❤️❤️ thank you for inspiring me as a player... and again now !! Un grand merci !!!'