Miller 's career has seen action with both of the Glasgow giants .
Miller was happy to weigh into the arguments as to whether Rangers are equipped to cope against Premiership sides and Miller 's adamant they 'll need to up their game .
Miller 's career has seen action with both of the Glasgow giants and he was happy to weigh into the arguments as to whether Rangers are equipped to cope against Premiership sides and he 's adamant they 'll need to up their game .