Ajax midfielder and Netherlands under-23 international Evander Sno has been rushed to hospital.
Liverpool midfielder Ryan Babel revealed on his twitter page that Sno had suffered a heart-attack.
“Just heard some terrible news,†Babel said, “A very good friend, former Celtic player Evander Sno had a heart attack in a game with the reserves of Ajax [against Vittese Arnhem]. He is in the hospital now.”
“His eyes are open again and he could talk,†Babel added later, “Makes you think about life.â€
Sno played for Celtic for two seasons, between 2006 and 2008, before signing a three year contract with Ajax.
The 23-year-old spent last season on loan with Bristol City, with whom he made 24 league appearances.