Kelvin Wilson has shared what he’s noticed about Celtic’s defence this season as Brendan Rodgers’ side sits with a 100% Scottish Premiership record. With just one goal conceded, three overall domestically, Celtic suffered a Champions League humiliation against Borussia Dortmund where the Scottish champions shipped seven against the Bundesliga giants. However, despite Celtic’s defenders being solid domestically, Kelvin Wilson has shared why he thinks the Hoops backline still has a difficult job in the Scottish Premiership. Kelvin Wilson hails Celtic defence’s ‘concentration levels’Wilson was pa…