The England international was a long-term target for the club.
The former MK Dons midfielder joined up with the club this summer after his £5 million move to the club in February. The teenager remained with his boyhood club for the rest of the season, helping them to promotion to the Championship with an exceptional run of form.
This season he has thrived in the Spurs first-team and is also starring for England as well - his recent performance against France potentially the thing of legend in years to come.
Today more details about how Alli became a Tottenham player have been reported by the London Evening Standard.
They claim that Tottenham had their eye on eventually calling Alli their own since the age of 15. Even at this age it seems the midfielder was showing the promise necessary to have Spurs monitoring his progress.
The report also mentions the player rejecting Liverpool the previous year and the fact Spurs beat interest from Aston Villa, Newcastle United and Sunderland for the player.
Alli has certainly become the player that Tottenham hoped he would in the past four years and looks likely to start in the Europa League against Qarabag this evening.
Spurs will hope to see him shine once again.