Arsenal are set to face Manchester United in a friendly at the SoFi Stadium in Los Angeles as they continue their pre-season preparations. It is a repeat fixture of a pre-season friendly last year which took place at the MetLife Stadium in New York, in which Man United beat Arsenal 2-0 in a fiery encounter. Premier League teams playing each other in pre-season has become more common, and in recent years Arsenal have faced Chelsea, Tottenham Hotspur and Man United in friendlies, and they are also due to face Liverpool on this tour. This has led to fierce encounters in what should be friendly ma…