I've followed Spurs for over 55 years. Kane is not only one the greatest players ever to play for Spurs, but also England.
Bale is also one of Spurs greatest ever players. Both him and Kane would be in my all time Spurs XI.
Bale left Spurs when he was 24, and went on to great success with Real Madrid. I doubt Kane would have achieved less if he had joined a top European club like Real at 24.
For the record, I rate Mackay, Greaves, Jennings and Hoddle on the same level as Bale and Kane, as Spurs players in my time that were world class. A few others were also nearly at that level.