Finding a replacement for Connor Goldson is no easy task. Across six years, the vastly-experienced central-defender was the colossus at the heart of Rangers’ backline. Not only a massive presence in both penalty areas, Goldson’s pinpoint diagonals became a key cog in Rangers’ tactical plans and their build-up play. Furthermore, they say the best ability is ‘availability’. And Goldson, making over 300 appearances for the Glasgow giants until his departure to Aris Limassol, played 48 or more games in five of his six seasons at Ibrox. Robin Propper, then, has big shoes to fill. But theFC Twente c…