Ajax’s pre-season friendly against Werder Bremen was abandoned after Abdelhak Nouri required emergency ambulance treatment on the field.

The Ajax midfielder, just 20, collapsed with around 20 minutes remaining in the game in Austria and there was immediate concern for his condition.

An ambulance and even a helicopter were called onto the pitch while the ground was cleared, though Nouri was eventually airlifted to hospital in what Ajax described as a “stable” condition.

A series of tweets from Ajax’s official account read: “Alarm on and around the field. There is something going on with Abdelhak Nouri. But it’s not clear what.

“An ambulance is coming onto the field. It looks serious, we hope soon for more info on Abdelhak Nouri.

“Emergency services are still with Nouri, players look worried. It is serious, we will let you know immediately if there is more clarity.

“Meanwhile a trauma helicopter landed on the field. People are asked to leave the stadium.”

Nouri reportedly received CPR on the field before leaving in the helicopter.