Yeah fair point and everything is possible although Bale had no connection to Tottenham in any way shape or form before we signed him where as Kane did or does.
If he does leave then accept that Real Madrid is the natural step because that's the enevtible move as it's happened before with Bale and Modric and therefore it won't be such a big blow to the fans but if we continue on this upward trajectory then there will be no need for him to want to play for anyone else, he can become an absolute legend for us...hence why I bought up Totti and Giggs who had many suitors through out their career who could pay them handsomely and guarantee them trophy's however they chose to stay at their clubs, you can add Gerrard to that as well.
As Fans we can only enjoy players while they are here I don`t think the club wanted to sell Berbatov, Modric or Bale but in the end those players wanted to go and the money met our valuation.