Originally published at: How the arrival of Jock Stein changed Celtic forever
Earlier on Monday, Celtic’s official Twitter account noted the anniversary of perhaps the day that changed Celtic forever. That was, the appointment of Jock Stein as Celtic manager on this day 55 years ago, in 1965. 
The legendary Jock Stein took over as #CelticFC manager 55 years ago today. 
https://twitter.com/CelticFC/status/1236909584742137856/photo/1 — Celtic Football…