You’ll be hard-pressed to find a Rangers fan who regrets signing goalkeeper Jack Butland. The Ibrox side have had a storied history of top class goalkeepers and it takes something special to fill the number one jersey in Glasgow’s southside. Jack Butland has proven himself worthy in a stellar first season between the sticks. The biggest testament that can be paid to the 31-year-old is that the transition from Allan McGregor – for some the greatest goalie in Rangers history – has been seamless. Named the Rangers Player of the Year and already a key fixture of the dressing room, it’s hard to ima…