Manchester United's defeat of Arsenal at the Emirates yesterday was something of a surprise (and a great game of football for the neutral). However, it should not be assumed that United's problems are over after two wins or that Arsenal have now lost the title as some of their nervous fans fear. {Dido is an Arsenal fan). Arsenal went into the game sitting at the top of both the Premier League and the Uefa Champions League tables, a rise underpinned by significant spending on players and years of settled ownership under US billionaire Stan Kroenke. Manchester United have outspent Arsenal over the past five years, yet stability has eluded them: less than two years after taking control of club operations Sir Jim Ratcliffe’s Ineos has already sacked two managers. Both clubs have had to handle a bumpy period of transition following the departures of long-serving managers — Arsène Wenger at Arsenal and Manchester United’s Sir Alex Ferguson. But while United’s owners have la...