It seems money is Christies measure of a "good career". He traded Champions League/ Europa League 60,000 crowds and unforgettable nights, medals and trophies for money. KT and Armstrong, his Celtic and Scotland buddies getting 150k (at least) in their bank account every month must have influenced his thinking. As I understand it Corpus was one of the lowest paid first team players at Celtic. He signed a long term deal at a young age. I don't know if he got an improved deal later on though. I think he might have. He found his old form under Ange too.
We did well to get a few million for a want away who could have headed on for nothing in January. If money in the bank is his measure of success good luck to him.
I won't knock him for it though. Most of us would leave our jobs tomorrow for quadruple wages.