The East Africans sealed their place in the knockout stages despite losing their final fixture 2-0 against Burkina Faso.
Appiah had previously faced Burkina Faso at the AFCON while in charge of Ghana. The qualification ticket will see Sudan come up against the Lions of Teranga.
“Now that we are facing Senegal, I will have one message to the players, I will have to tell them you have played against Burkina Faso, and now you have to play against Senegal, so you need to show your true colours,” said Appiah.
“Sudan deserves to go far in the AFCON, and our ultimate goal remains to chase for the AFCON title. We have respect for Senegal, they are the former champions, but we are ready.
“My players will need to prove to me, and to all Sudanese people here and back home that they deserve to go better than where we are.”
