Ebullient manager takes his side to Salzburg to cross swords with the European champions in the Super Cup One thing was almost instantly detectable as Unai Emery walked into a stuffy room inside the Red Bull Arena on the eve of Wednesday’s Super Cup against Paris Saint-Germain. After a summer of change, Aston Villa’s manager appeared uber-relaxed, confident his team will absorb a series of headline departures. He cracked a joke about his English improving and poked fun at John McGinn, impersona…