4. Jetro Willems (PSV Eindhoven)
The PSV youngster made the headlines when he became the youngster player to appear in a European Championship last summer, appearing in every game of the Netherlands’ doomed campaign aged just 18. Willems is a bright prospect who has also attracted interest from Manchester City and Man United but Andre Villas-Boas may feel he is too inexperienced to be Spurs first choice going into next season.