Abdelhak Nouri received CPR on the pitch and was airlifted to hospital in Austria after falling to the ground in the 73rd minute of the game against Werder Bremen.
Ajax midfielder Abdelhak Nouri has suffered 'serious and permanent brain damage' after collapsing during his side's pre-season friendly with Werder Bremen on Saturday.
The 20-year-old midfielder received CPR on the pitch and was airlifted to hospital in Austria after falling to the ground in the 73rd minute of the game.
Doctors had been cautiously optimistic about his prospects, but the Dutch club have now confirmed that Nouri's diagnosis is career-ending.
Medics tended to Ajax midfielder Abdelhak Nouri after the midfielder collapsed on the pitch
A defibrillator was used on Nouri on the pitch before he was taken to hospital in a helicopter
Medical services rushed to the 20-year-old's aid where CPR was administered
Ajax tweeted: '#Ajax are deeply saddened by the news that Appie Nouri has been diagnosed with serious and permanent brain damage.
'Our thoughts and prayers go out to him and his loved ones in this difficult time.'
Nouri had been kept in an induced coma in intensive care since Saturday's incident, with Ajax confirming on Tuesday that his condition was no longer life-threatening.
In a statement, Ajax said: 'The player is still at the Intensive Care in the hospital in Innsbruck. His situation is stabilised and his life is out of danger.
'A CT scan and a few other neurological tests didn't show any abnormality, so doctors are "cautiously positive" about the situation. However, these results don't give any certainties about a good recovery.
'In the next 24 hours, the doctors plan to wake up Nouri slowly, to be able to investigate his brain function better.'
A helicopter takes the Dutch midfielder to hospital following a suspected cardiac arrest
Ajax soon posted an update on Nouri's condition saying he is stable following the scare
The pre-season friendly was 73 minutes old when medics were forced to rush onto the pitch
The game was called off approximately 15 minutes after Nouri began receiving treatment
More to follow.
Nouri goes to ground still breathing but he soon lost consciousness due to the heart issue
The referee was alerted to the incident and stopped the game before medics rushed on