During his 10 years at Celtic, the left back won six Scottish League titles, three Scottish Cups, four League Cups and the European Cup. He was also capped 18 times for Scotland.
"Everyone at Celtic is deeply saddened by the loss of Tommy, a true Celtic giant and a man who gave the club so many years of his life in an illustrious football career," Celtic Chief Executive Peter Lawwell said in a statement on Thursday.
"Tommy will forever hold his rightful place as one of the true Celtic legends.
"Our thoughts are with Mary and Tommy's family and friends at this very difficult time."
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
(Writing by Simon Jennings in Bengaluru, editing by Larry King)
