The 22-year old has started in the last three league games for Spurs after replacing the injured Aaron Lennon and Villas-Boas is backing him to continue his rapid rise to the top.
"He came very motivated to do well after his loan," he told ESPN. "He was jumping for an opportunity.
"That opportunity arose due to Lennon's injury and he took it. Sometimes a player on the fringe of the first eleven doesn't do enough to break into the team, but he has taken the opportunity.
"He is very explosive in his game, through changes of pace and his dribbling ability.
"He is difficult to control with his change of pace. He has developed a lot in the last year, on loan at QPR and with us. Hopefully he can develop into a top player."