Didn't know he was ill but if he had dementia then better to pass on as he was deceptively an extremely sharp and intelligent man. He not only managed the Republic of Ireland football team to their greatest successes at the time, but he was very underrated in his role in helping to heal some Irish and British enmity.
A modest, plain talking man who loved football, fishing and a drink, the Irish public virtually universally absolutely loved and adored him.
As an English World Cup winner he had the freedom of Ireland, maybe their most beloved manager ever, just goes to show what a great man he was.
His Ireland teams were full of English accents as well, but they played for Ireland with true passion and Jack was always dedicated to them in the role.