The Dutch, currently top of Group G following three wins and a draw from four qualifiers, play host to third-placed Romania in Rotterdam on March 24 before facing Slovenia in Celje four days later.

Van Basten will name his final squad for the double-header on March 16.

Provisional squad: Edwin van der Sar (Manchester United), Maarten Stekelenburg (Ajax), Henk Timmer (Feyenoord); Khalid Boulahrouz (Chelsea), Wilfred Bouma (Aston Villa), Giovanni van Bronckhorst (Barcelona), Tim de Cler (AZ Alkmaar), Urby Emanuelson (Ajax), John Heitinga (Ajax), Kew Jaliens (AZ Alkmaar), Jan Kromkamp (PSV), Joris Mathijsen (Hamburg), Barry Opdam (AZ Alkmaar); Ibrahim Afellay (PSV), Nigel de Jong (Hamburg), Denny Landzaat (Wigan), Clarence Seedorf (AC Milan), Wesley Sneijder (Ajax), Evander Sno (Celtic), Rafael van der Vaart (Hamburg), Demy de Zeeuw (AZ Alkmaar); Ryan Babel (Ajax), Klaas Jan Huntelaar (Ajax), Danny Koevermans (AZ Alkmaar), Dirk Kuyt (Liverpool), Arjen Robben (Chelsea), Jan Vennegoor of Hesselink (Celtic).