Philippe Clement would have wanted his senior players, his leadership group, to stand up and be counted against Celtic, what he got instead was nothing short of a disgrace. John Lundstram scored a comic book capers own goal, looking like a pub league player rather than one on tens of thousands of pounds a week. It only got worse when Willie Collum changed his original on-field decision to show the 30-year old a red card, leaving Philippe Clement with no wins from his first three Old Firm derbies as Rangers manager. READ MORE: Rangers vs Celtic: Old Firm all-time record attendancesJohn Lundstra…