SEVEN years ago Jamie Mackie scored the QPR goal that threatened to kill Manchester City’s title dream. Chasing a first league crown in 44 years, all City had to do was match Manchester United’s result at Sunderland. Lowly Rangers were the visitors to the Etihad Stadium on May 13, 2012 — a date now etched in the minds of fans on both sides of the city. City were expected to waltz to the title against a team fighting to stay in the Premier League — but no one told Mackie. When the striker scored to put QPR 2-1 up, City fans had to endure the most nervous half hour of their lives. The agony was finally eased when Edin Dzeko scored an injury-time equaliser before Sergio Agueroooo won City the title.Amid the madness, QPR stayed up after results elsewhere went their way. Tonight, Mackie takes on City once again as Oxford host them in the Carabao Cup quarter-finals — but the tie has no chance of matching the drama of seven years ago. He told SunSport: “That game was like a cup final where our fate was in our hands but it was an extremely tough task playing against a…