Mourinho’s side had to beat the Gunners to stay in the race for Europa League qualification and they moved above their opponents thanks to Toby Alderweireld’s 81st-minute winner.Arsenal had taken an early lead through a superb Alexandre Lacazette strike, but a defensive error allowed Son Heung-min to level the tie less than three minutes later.The result lifts Spurs into eighth place, two points above Arsenal and into a position which would be enough for Europa League qualification if Manchester City are not allowed to compete in next season’s Champions League.