Chris Sutton hasn’t shied away from criticism of Celtic this season and is again raising concerns about the Bhoys ahead of this crucial run of games. Celtic have four games remaining in the Scottish Premiership and a Scottish Cup final against Rangers to look forward to. The double is on the line and there’s no room for error, including in today’s match at home to Hearts. Steven Naismith’s side arrive at Celtic Park with no fear having beaten the Bhoys in the two previous meetings between the sides. It’s a dangerous test for Brendan Rodgers’ team. For Sutton, Celtic’s defensive fragility remai…