Joe Hart is enjoying a fairytale end to his football career after playing a key role in helping Celtic win their third successive Scottish Premiership title. The former England international has been in sparkling form this season, keeping 17 clean sheets in 47 appearances across all competitions [Transfermarkt]. With two matches left before Hart hangs up his gloves, he will also be given another crack at silverware in the form of the Scottish Cup final against Rangers next weekend. From observation, the 37-year-old has cut an emotional presence over the past few weeks, taking in every last mom…