Jose Mourinho branded Harry Kane and Son Heung-min “world class” after their lethal partnership fired Tottenham back to the top of the Premier League with a 2-0 north London derby win over Arsenal. Son and Kane set up each other’s first-half strikes, meaning they have now combined for 12 goals this season, as Spurs extended their unbeaten run to 10 games, going back to the first game of the campaign.