Manchester City began their pre-season tour of the US with a shock 4-3 defeat to Celtic. Although City started the game with big names like Erling Haaland and Jack Grealish, they could not overpower the Scottish champions. Celtic took the lead with a well-worked team goal scored by Nicolas-Gerrit Kuhn. Oscar Bobb made it 1-1 before Brendan Rodgers’ men scored twice towards the end of the first half through Kuhn and Kyogo Furuhashi to take a 3-1 lead into half-time. Máximo Perrone pulled a goal back for City just seconds into the second half, before Haaland got a third. But substitute Luis Palm…