It was announced on Friday evening that the former player had lost his battle with the deadly disease at the tender age of 36. News of Miller's condition had emerged in November and he had been receiving treatment in the United States, where he ended his playing career with Wilmington Hammerheads in North Carolina.
Since the news has broke, tributes have been pouring in from his former clubs, in particular Celtic and Manchester United.
"Everyone at CelticFC is deeply saddened to hear of the passing of former midfielder Liam Miller. Our thoughts and prayers are with his family and friends at this time." Celtic, whose players will wear black armbands for Saturday's Scottish Cup tie against Partick Thistle, said in a statement.
9 February 2018
Miller made his Celtic debut in 2000, but made his name by scoring twice in the Champions League in the 2003-2004 season which attracted United's interest.
The Premier League club also released a statement through their official twitter page, which read: "Manchester United is deeply saddened to learn of the tragic death of our former midfielder Liam Miller. We extend our condolences to his loved ones at this extremely difficult time."
10 February 2018
After making 22 appearances under Sir Alex Ferguson at Old Trafford, a nomadic career took Miller to Sunderland, Queens Park Rangers and Hibernian before a three-year spell in Australia with Perth Glory, Brisbane Roar and Melbourne City.
He returned to his native Cork in 2015 to join Cork City before a final season with the Hammerheads in 2016. He also won 21 caps for the Republic of Ireland at international level.