The 23-year-old Chadli, who will discuss personal terms and undergo a medical with the Barclays Premier League club, has spent three seasons in the Eredivisie with Twente and scored in both Champions League ties against Spurs during the 2010-11 season.
If the deal is completed without a hitch the winger will join his new team-mates in Hong Kong, where Andre Villas-Boas's side will compete in the Barclays Asia Trophy.
Source: PA
Source: PA