Arsenal’s mean defence faces acid test to shut out Man City again

City remain their biggest obstacle, although the path could be cleared should the holders be hit by a points deduction for 115 alleged breaches of Premier League rules by the end of the campaign.Haaland has struck a record nine times in the first four matches of the new Premier League campaign.The Norwegian’s stunning form has ensured City are the only side in the English top-flight yet to drop points.But Arsenal are on their tails again — just two points behind — after proving their title credentials in battling away wins at Aston Villa and Tottenham.- Solid foundations – Arsenal’s…