Rangers were always going to be up against it, needing to go to Parkhead to beat Celtic to have any hope of winning the Scottish Premiership title. What doesn’t help was a referee being appointed who the club has already openly questioned and criticised on more than one occasion – Willie Collum is only human, and it is naive to think that this didn’t affect him in one way, or another. The SFA’s senior whistler has a long history of high-profile howlers and several bizarre incidents involving Rangers on his record, seeing him flash a red card for John Lundstram wasn’t a surprise. READ MORE: Ran…