The 19-year-old is highly-rated in France, but only has 18 months left to run on his Nancy contract, and a number of clubs are thought to be monitoring the youngster.
Former-Aston Villa manager Alex McLeish reportedly prepared a £2m bid to bring the French starlet to Villa Park last season, and new Villians boss Paul Lambert is believed to be eager to complete the deal.
But Spurs are hopeful of nipping in to secure the signature of Haidara. Nancy are thought to value the defender at £6.5m, well above the fee Villa have offered, which could be in Tottenham's favour.
The Premier League strugglers watched the Nancy star 10 times last season, and sent chief executive Paul Faulkner to run the rule of him on a number of occasions.
But Spurs have joined the growing list of admirers taking an interest in Haidara. The young fullback has two caps for France under-21s, and made his debut for the Ligue 1 club in the 2010-11 season.
Haidara plays most of his football at left-back, a position currently occupied by Benoit Assou-Ekotto or Kyle Naughton at Tottenham.
Spurs will look to add another three points to their Premier League total on Saturday, when they make the short hop across London to visit Fulham at Craven Cottage.