Joe Hart has sent out a video message to the entire Celtic family as he embarks on the next stage of his footballing life. The retired goalkeeper ended his career in superb fashion, winning seven trophies across three seasons at the Bhoys. That all culminated in a Scottish Cup Final win over Rangers at Hampden last month, kickstarting a summer of celebration as double winners. Hart has absolutely loved his time in Glasgow, something again made abundantly clear in his latest address to supporters. Taking to Instagram, Hart released a video – embedded below – thanking everyone at the club and al…