The Nigeria Football Federation (NFF), has confirmed that Super Eagles coach, Sunday Oliseh, has arrived in Belgium and has begun medical treatment.
Oliseh was flown to Belgium for treatment on Thursday, after his health condition worsened.
According to the NFF, the former national team captain became dizzy and weak after lunch and had to fly out from Port Harcourt.
He has told the team administrator, Dayo Enebi, to update him always via sms, adding that "I'm with the team in spirit so keep me updated.
"I have absolute confidence in the team even in my absence they will get the job done for Nigeria on Sunday."
Nigeria lead Burkina 2-0 from the first leg of their CHAN qualifier.
