The Colombian joined Spurs last month from Ajax.
"My job title reads defender," Sanchez insists to the Daily Mail. "You can't mess up your priorities and above all, my job is to keep the ball out of our goal.
"My biggest idol is Franco Baresi, the legendary Italy and Milan defender. I am too young to have watched him live but within the game, everyone tells you about that powerful Milan defence.
"I researched YouTube videos and downloaded clips to study. Even though it is a different era, there is so much you can still take from a video of Baresi or Paolo Maldini.
"This was the cream of defending! They not only defended brilliantly, but were so comfortable on the ball. That is not a new phenomenon. First you get the defensive part right, then contribute to the philosophy of the team, construct play and recognise the right times to step forward."