Tottenham Hotspur have to get right back on the horse on Thursday night, travelling to take on Chelsea at Stamford Bridge. This was always going to be a huge period for Ange Postecoglou. Arsenal at home, Chelsea away, Liverpool away; it’s the kind of run that can test any Premier League manager. Sunday’s 3-2 defeat to Arsenal was, of course, hard to take. North London derbies are crucial games in the calendar and losing Sunday’s game means fans are expecting a response. Tottenham at least have a chance to put it right quickly, heading to West London to take on Chelsea on Thursday night. Arsena…