Philippe Clement is never one to single out his individual Rangers players. When he has done so, it’s usually in response to journalists but the focus has always been on the collective whether the club wins or loses. One player however who Philippe Clement has only ever spoken about in glowing terms is undisputed Rangers number one Jack Butland. But it was the Rangers goalkeeper who found himself at the centre of Celtic’s painful Scottish Cup winner when he fumbled a long-range shot into the path of Adam Idah. It’s a moment which capped a terrible week for the Englishman but come full time Bel…