The Celtic USA tour continues tonight with a match against English Premier League champions Manchester City at Kenan Stadium. The Bhoys eased to a 4-0 victory against Major League Soccer side DC United at the weekend thanks to a double from the in-demand Matt O’Riley, as well as goals from James Forrest and Mikey Johnston. Despite a step up in the quality of opposition, the entire exercise remains about fitness and building towards the start of the Scottish Premiership season at the start of next month. Cameron Carter-Vickers could return to the match squad after joining up for training late l…