Ruud van Nistelrooy's [ Images ] hopes of a dramatic return to the international fold at the World Cup look slimmer after the former Manchester United [ Images ] and Real Madrid [ Images ] striker was left out of a Dutch training squad named on Monday.

Coach Bert van Marwijk, who names his provisional squad on May 11, omitted Van Nistelrooy from a 26-man training camp assembling next Monday.

The 26 players have no competitive club matches left this season, and the list includes Van Nistelrooy's SV Hamburg team mates Eljero Elia [ Images ] and Joris Mathijsen [ Images ].

Van Nistelrooy resigned from international soccer after the 2008 European Championship, but had a change of heart earlier this season when he said he would make himself available.

Arjen Robben [ Images ], Mark van Bommel [ Images ] and Wesley Sneijder [ Images ] are not on the list as they are due to contest the Champions League [ Images ] final on May 22 in Madrid, while Klaas-Jan Huntelaar and Rafael van der Vaart still have league obligations.

Van Marwijk invited AZ Alkmaar winger Jeremain Lens [ Images ] and Ajax Amsterdam defender Vurnon Anita [ Images ].

The Dutch play Denmark, Cameroon and Japan [ Images ] in the group stages in South Africa [ Images ].