Celtic comfortably swatted St Johnstone aside at Parkhead yesterday to kickstart a weekend of St Patrick’s Day celebrations in exciting fashion. The Bhoys spurned several chances in the first half; however, Kyogo Furuhashi’s excellent movement ensured his side entered the changing room with a lead after latching on to a cross from Nicolas Kuhn to head past Dimitar Mitov. All too often, Celtic have struggled to capitalise on a slender lead at home, leading to some uncomfortable finishes in the latter stages of matches. Nevertheless, that wasn’t to be the case yesterday, as Brendan Rodgers’ men …