As well as being a chart-topping singer, Michael – real name Georgios Kyriacos Panayiotou – was a prolific collector of art, championing the Young British Artists (YBA) movement that rose to prominence in the late 1980s and early 1990s.
The singer, who died in 2016, was known for his eclectic tastes when it came to paintings and other works, often defying convention...