Rangers’ new signing certainly doesn’t want for confidence. Far more experienced footballers than him have toiled amid the expectations when donning that famous blue shirt. But pressure, as they say, can create diamonds. And Rangers certainly appear to have got their hands on something shiny indeed in young Connor Barron. Still only 21, the fourth of five new arrivals at Ibrox this summer jumped at the chance to put pen to paper on a four-year contract with his Aberdeen deal expiring. And while some – including Dons legend Willie Miller – have been left wondering if this is a classic case of t…