(Reuters) -Police made nine arrests following Manchester United’s 4-2 Premier League win over Leeds United during which a Manchester player appeared to have been hit by something thrown from the crowd, they said on Monday. Second-half goals from substitutes Fred and Anthony Elanga earned Manchester United victory on Sunday in a red-hot atmosphere in Leeds and Elanga appeared to be hit by an object while celebrating Fred’s goal. Manchester United and Leeds United have had a fierce rivalry over the years. “There was no significant disorder but there were a few incidents in Leeds City Centre ahea…