Former Celtic manager Wim Jansen has revealed he is living with dementia.
Jansen turns 75 on Thursday and a biography of his life in the Netherlands will be published this week.
And the Feyenoord legend - who famously led the Hoops to the title in his only season in charge in 1998, stopping Rangers from winning ten-in-a-row - has revealed he is living with the illness in new book 'Meesterbrein' by author Youri van den Busken.
In the book, Jansen discusses how he decided to seek medical opinion after reading a book about his former Dutch international colleague, Piet Schrijvers, who suffers from Alzheimer's disease, because he recognised the same symptoms.
Jansen states: "I wonder how fast it will get to me?
"Will I remain as I am for a while or go downhill?
"I still enjoy the company of my children and grandchildren. I still try and go to Feyenoord home games.
"But with everything else, I will have to make choices."
Jansen made over 500 appearances for Feyenoord, which included beating Celtic in the 1970 European Cup Final in Milan and was a losing finalist twice with the famous Dutch teams in World Cup Finals in 1974 and 1978. He went on to manage the Rotterdam club too.
Yet he was greeted with derision and scepticism when he was the shock choice to succeed Tommy Burns in 1997 at Celtic after a spell in Japan with Sanfrecce Hiroshima.
However, Jansen signed Henrik Larsson and led Celtic to the title and also won the League Cup by beating Dundee United in the final.
But Jansen stunned Celtic fans by quitting as manager 48 hours after they sealed their title with a win against St Johnstone, citing irreconcilable differences with both general manager Jock Brown and chairman Fergus McCann.
He went back to Japan to be an assistant manager at Urawa Red Diamonds and eventually made an emotional return to Feyenoord as technical director and assistant manager before retiring 11 years ago.
