Erling Haaland started the Premier League season with a bang as the Norwegian struck twice in defending champions Manchester City's 3-0 win at promoted Burnley.Rodri completed the scoring after Haaland's first-half double to give City a perfect start to their quest to become the first side to win four consecutive English top-flight titles.Haaland fired City to a treble of Premier League, Champions League and FA Cup glory last season by scoring 52 times in his first year at the club.READ | MTN8: Komphela returns to Chloorkop, Chiefs expectations weigh heavy on NtsekiThe 23-year-old took just over three minutes of the new campaign to open his tally once more when he swept home Rodri's header across goal.Haaland then crashed in a shot off the underside of the bar nine minutes before half-time as his finishing papered over the cracks of a far from perfect first 45 minutes from the visitors.But the ease with which Pep Guardiola's men cruised to victory after the break was an ominous sign for the chasing pack aiming to dethrone City.Rodri completed the scoring when the Spaniard smashed home a loose ball from a free-kick 15 minutes from time.City's night, though, was soured by an injury to captain Kevin De Bruyne.The Belgian had only recently returned from a hamstring tear he suffered in the Champions League final and limped off midway through the first half.City could be without De Bruyne for a number of weeks after the recurrence of the hamstring injury he suffered during the Champions League final against Inter Milan two months ago.Burnley boss Vincent Kompany has a statue outside City's Etihad Stadium in honour of his decorated playing career with the English champions.Kompany returned the Clarets back to the Premier League