It is clear that Pochettino played a very important role in the decision.
The likes of Reus and Schurrle may be absent this time, but Dortmund will still pack a punch when they come forward.
The former Burnley man was expected to be first-choice right-back for Tottenham this season after Kyle Walker's sale to Manchester City, but he now has a big job on his hands to retain a place in Pochettino's side after the arrival of Aurier. The Spanish side easily defeated APOEL 3-0.
Tottenham fans spent much of this summer fearing such issues - the inadequacy of backup players - would remain unresolved, with the north Londoners the last club to make a signing. New signings Juan Foyeth and Fernando Llorente are on the bench, along with Harry Winks and Moussa Dembele.
At the time of the Aston Villa game, Kane was Spurs' third-choice striker behind Roberto Soldado and Emmanuel Adebayor, but the Englishman was rewarded for his job-saving goal by starting every league game that followed scoring another 20 goals to lift the club to sixth.
Victor Wanyama is also still missing due to a knee injury while Erik Lamela is still working his way back to full fitness following 11 months on the sidelines with a hip injury.
The contrast is all the more dramatic given Spurs' relentless form at White Hart Lane last season, where they were unbeaten in the league and took 18 points out of 18 against the league's bottom six. Spurs have a fantastic head-to-head record against Swansea too, boasting 10 wins from their last 12 in all competitions.
Little needs to be said about 32-year-old Llorente's experience. Llorente may get the chance to prove that point on Saturday, against the club he has just departed.
They have been one of the most free-flowing and attractive teams to watch in Europe for many years now and importing a manager like Bosz from Ajax was never going to change that philosophy.