Sandro will move to Spurs once Inter's Copa Libertadores campaign is over.
"Winning the Libertadores is a dream. It's the way I want to leave, so the fans are happy. I would like to leave Porto Alegre with the mission accomplished," said the youngster.
"Now with the Tottenham agreement settled, there is no speculation or concerns, I can play more relaxed, no pressure. I can develop my football."