Liverpool forward Cody Gakpo is one of five who have been sent home from the Netherlands training camp.
The Dutch are preparing for Euro 2024 qualifiers against France and then Gibraltar.
However, it has now emerged that several of their players will not participate due to illness, per the Dutch FA.
A virus outbreak within the camp is thought to be the issue, with manager Ronald Koeman bringing in replacements.
Bayern Munich midfielder Ryan Gravenberch, Inter Milan defender Stefan de Vrij and goalkeeper Kjell Scherpen will join the squad.
Bayern Munich defender Matthijs de Ligt, Anderlecht goalkeeper Bart Verbruggen and PSV Eindhoven midfielder Joey Veerman, Newcastle United star Sven Botman, and Liverpool's Gakpo are among those who are going home.