Danny McGrain, widely regarded as Scotland's greatest-ever full-back, has been diagnosed with Alzheimer's disease, his family has confirmed. The 76-year-old former Celtic legend has become less involved with the club and its supporters in recent years, a change his wife, Laraine McGrain, explained in a statement on Celtic's website. She said the family decided to share the news to provide clarity about his reduced participation. "Danny received this diagnosis some time ago, and we felt it was right to be open and clear," she said. "Danny has always loved helping supporters, but as time has gone on, that has become more difficult for him. We wanted to explain his situation with honesty and with the care and respect the Celtic family has always shown us." McGrain, who played 62 times for Scotland, began his career in Celtic's youth academy and spent 17 years with the Glasgow club. He made 663 appearances for Celtic between 1970 and 1987, winning seven League Championships, five Scottish Cups, and two Scottish League Cups. After a season with Hamilton Academical, he retired in 1988 and later managed Arbroath. Despite leaving the playing field, he remained deeply connected to Celtic, taking on various coaching roles, supporting the club's youth development, and hosting events at Celtic Park. In recent weeks, McGrain's wife and daughters decided to share the news publicly, hoping it would allow Danny to continue receiving the support of the Celtic family. "Danny remains in good spirits, enjoying time with his loved ones, following the game, and staying close to the club he holds so dear," the club said. His family emphasized that despite the challenges brought by his diagnosis, he continues to live with joy and connection to the club and his loved ones. Celtic chief executive Michael Nicholson praised McGrain, calling him a true great of the game. "When we talk about Celtic legends, Danny will always be right at the top of that list," he said. "We are deeply grateful for everything he has given to Celtic and to the people around him. The whole club will ensure Danny and his family receive our full support, care, and kindness throughout what lies ahead." McGrain also represented Scotland in two World Cup tournaments, earning 62 caps and remaining undefeated in five matches. He was known for his exceptional skill and consistency, with football experts and peers considering him the finest right-back in the world during the 1970s.