Celtic defender Alistair Johnston will have an extended stay at the Copa America tournament after Canada progressed through a tough group that included Argentina, Chile and Peru. Canada needed a draw against Alexis Sanchez’s Chile in Orlando, Florida overnight and held on for a 0-0 result that put them through to the competition’s quarter-finals. Johnston and his team are now set to face the winners of Group B in Arlington, Texas this coming Friday for a place in the semi-finals. At this stage, their most likely opponents look to be Venezuela. It’s a historic moment for Canada in their first-e…