Celtic were defensively excellent in last night’s goalless draw with Atalanta in Bergamo. The trio of Kasper Schmeichel, Auston Trusty and Liam Scales in particular shone through on what was a much improved Champions League showing from their Borussia Dortmund hammering. Brendan Rodgers urged his players to show their defensive capabilities at the back and they did just that as they thwarted the Black and Blues at every turn. It was an imperious performance from the back four plus their goalkeeper but for the Italian hosts, manager Gian Piero Gasperini felt it was their profligacy more than an…