While the Villans rate the 22-year-old at £40m but Spurs believe they can take the England Under-21 international for less than half that amount.
Grealish recovered from a serious kidney-related illness which forced him to miss much of the first half of the season. Since returning, the midfielder delivered the best form of his career on a consistent basis.
A boyhood Villa fan, he felt the defeat to Fulham at Wembley in the play-off final more keenly than most. No sooner had the final whistle blown than the speculation over his future began.
With owner Dr Tony Xia accused of failing to support the club properly in recent months, the north London club are convinced that failure to win promotion via the play-offs means Villa are desperate to sell.
Mauricio Pochettino is a keen admirer of Grealish, believing he can develop the midfielder’s talent as he did with Dele Alli. The youngsters are understood to be close friends which will appeal when Tottenham come calling.
They may not be the only club interested. Leicester City recently enquired about Grealish while Newcastle United and Manchester United are also monitoring the situation.