Much of the talk this week in the buildup to a pivotal Old Firm derby hasn’t been about Rangers resurgence under Philippe Clement but about the referee. The appointment of John Beaton has irked those across the city of a green and white persuasion with Brendan Rodgers personal rant after losing at Tynecastle still fresh in the memory. Those of a sane mind know what Rodgers was trying to do but should Rangers and Philippe Clement have any concerns about the man in the middle? Barry Ferguson has had his say. Rangers referee shouldn’t concern Philippe ClementIt’s the nature of Scottish football t…