4) Jordy Clasie
Talented 22 year-old central midfielder Jordy CLasie has been mooted as an option for van Gaal when it comes to strengthening a central midfield that came in for so much criticism last season, with the Feyenoord starlet seen as an integral part of the future of Dutch football. Clasie has made 98 Eredivisie performances for his club, plus 34 on loan at Excelsior, giving him an impressive amount of experience for a player of such tender years, whilst he has also been capped by his country at all of the ages levels upwards from Under 18s.