Alistair Johnston is Celtic’s sole survivor across both ongoing international tournaments as Canada prepare for their Copa America quarter-final tie against Venezuela this weekend. Les Rouges have made great strides under Jesse Marsch have been one of the surprise packages of the competition, being duly rewarded for their spirited displays in the United States. On matchday one, Johnston and his national teammates performed admirably against Argentina in a 2-0 defeat, showing their ability to mix it with the World Cup champions. Nevertheless, the last two fixtures in Group A saw Canada come int…