New Club Africain signing Derrick Mensah is in a serious condition suffering a cardiac attack at training on Wednesday morning.
The Ghana U-20 international midfielder lost consciousness and was urgently transferred to a clinic where he underwent tests.
It was revealed he suffered a heart attack and his health is being closely monitored.
The President of the Medical Commission of Club Africain Mohsen Trabelsi has confirmed that the player suffers from heart problems.
Mensah passed a medical and put pen to paper to a four-year deal from relegated Ghana Premier League side Tema Youth last month.