By Nathan Ridley Manchester City have one foot in the Champions League quarter-finals after beating Copenhagen 3-1 in Denmark. City were rewarded for their dominant start when Kevin De Bruyne broke the deadlock on 11 minutes with a typically well-struck low drive. As Erling Haaland and co threatened to double the visitors’ lead, an injury to Jack Grealish gave Copenhagen a moment to breathe and they capitalised on City’s first error which came courtesy of a mistake from Ederson while playing out from the back. Debutant Magnus Mattsson scored the brilliant equaliser from range but Copenhagen’s …