There was a brief moment that it looked like former Chelsea manager Graham Potter might be a viable candidate for the Rangers job. The former Brighton manager was one of the media’s favourite names when it came to Rangers around the time of mounting pressure on Michael Beale. When that pressure finally told, you’d have been forgiven for pointing towards the former Premier League boss as a solid alternative. But quick as a flash, Graham Potter’s camp moved to distance themselves from the notion the ex-Ostersunds boss could take over at Ibrox. Rangers obviously moved on quickly and went to secur…