"Ethiopia are not at the same level with the Black Stars especially in terms of statistics. However, this is football and since they won their game against Sierra Leone, it underlines that there is no easy side in the group so we must be calm and stay focused," Gyan said.
"They lack the cutting edge upfront so they hardly score many goals but they are good with possession. Their fans will be around in their numbers to cheer them on to victory so the pressure will be mounting on us.
"We need to be resolute at the back and limit the errors we will be making because that brought about the defeat against Kenya. We are hoping to win this game on Sunday despite everything," he added.
Ghana are in third position with three points, four points behind group leaders Kenya and a point below Ethiopia.