Celtic’s doubters have had very little to feed off this season as the Bhoys continue to enjoy a robust start to the campaign under Brendan Rodgers. Barring the Hoops’ heavy defeat in Dortmund that came on Champions League matchday two, the Glasgow giants have been unbeaten in their other exploits domestically and on the European scene. Consecutive results against Atalanta and Leipzig for Celtic have put the reigning Scottish Premiership champions on seven points from four league phase fixtures, elevating their chances of progressing deeper into the tournament. Over the years, supporters of oth…