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.