Reports earlier this week suggested that the 22-year-old was just days away from completing his switch to White Hart Lane after weeks of speculation, with the player even given permission to conduct talks with the Premier League outfit last month.
However, Huiberts insists that Spurs have still not met the club's asking price for the Netherlands international, which is thought to be around £17m.
"There is a lot of speculation and I read a lot of nonsense stories," Huiberts told Dutch newspaper Noordhollands Dagblad.
"We received one bid from Tottenham Hotspur that we have not accepted. That's not so strange to me. It is not often that a club agrees immediately with a first offer. Then we heard nothing more."
Janssen, who was the top scorer in the Eredivisie with 27 goals last season, is also reportedly on the radar of Paris Saint-Germain, West Ham United and Wolfsburg.