The 41-year-old revealed back in 2013 that he has motor neurone disease and the former defender has battled the terminal illness with the full support of Scottish football.
However, the former Gers captain has now told the Scottish Sun that he “knows what the outcome will be”… unless there is a miracle cure for the muscle-wasting condition.
Ricksen, who won three league titles and two Scottish Cups during his hugely successful Ibrox career, said: “I know what the outcome will be of this terminal disease, but I’m not going to waste any time or energy worrying about future.
“I’m realistic and know that, at the moment, there is no cure for MND.
“But the outlook hasn’t changed and is still terminal and there are no new treatments at the moment.”
Rangers managed to raise £320,000 toward their former player’s care through a tribute match two years ago, with thousands of fans turning out at Ibrox to show their support.
And despite his admission that his health is deteriorating due to MND, Ricksen refuses to give up.
He added, “I’m not going down without a fight and will never give up.
“I certainly don’t expect to die soon and I’m still making plans for the future.
“I’m still convinced I’ll be the first person to beat MND.”
Fans on Twitter were of course quick to rally around the player who made over 180 appearances for Rangers, while also featuring for Zenit St Petersburg and AZ Almkaar:
No surrender, Fernando Ricksen! Warrior, leader, legend.
— ArthurNuman'sLeftFit (@artsleftfit) November 2, 2017
NO SURRENDER FERNANDO RICKSEN ??????
— Aaron (@AaronGraham03) November 2, 2017
— nicky taylor (@nickyt3232) November 2, 2017
just read about Fernando Ricksen’s health detoriating, absolutely heatbreaking. God Bless Fernando, brave as a lion!??
— bmac (@bryanmclean19) November 2, 2017
God bless Fernando Ricksen?
— Alistair (@AlistairB99) November 2, 2017
Absolutely heartbroken to learn of Fernando Ricksen's deterioration. This is how I still think of him – a captain, a joker, a Ranger ?⚪????? pic.twitter.com/4OUdxLvflu
— Foddy 'n' Coke (@Gers89_) November 2, 2017
There’s only one Fernando Ricksen! Absolute warrior on and off the field https://t.co/t05ItM3632
— Ross Craig (@Rossco16901) November 2, 2017
— Steph G (@SG68RFC) November 2, 2017
Aww Fernando Ricksen is heartbreaking ??
— Steph xo (@xsd11x) November 2, 2017
Heartbreaking. God bless Fernando Ricksen.
— The Boat E2 (@TheBoatE2) November 2, 2017
Fernando ricksen was born 1 of us. He knew what we are and what we do, absolute best cunt I have ever met , stay strong no surrender ?
— RB (@Makavielli1690) November 2, 2017
So sorry to hear that this are going bad for you @FernandoRicksen u will always be a legend in all our hearts ? and ibrox
— futafan (@bonbenfica1) November 2, 2017
Ricksen ? ?
— Matt Gordon ?? (@Matt_Gordon95) November 2, 2017
What a fighter!! Thoughts & prayers are with ricksen the now! True inspiration no matter what part of the divide u are from! Stay strong ?? pic.twitter.com/sXY3j4NWZa
— Stacey Devlin (@StaceyDevlinxxx) November 2, 2017
Stay strong, Fernando!