An Asian Football Confederation (AFC) official told Reuters on Thursday that the allegations against the regional chief, brought to attention by American CONCACAF general secretary Chuck Blazer, would not cause any problems to the Qatari.
"He's going to present his case, to get his name cleared and is very confident he will do so," the official, who wished to remain anonymous, told Reuters.
"It will be business as usual. There is no chance he will withdraw from the election."
Two CFU members, Debbie Minguell and Jason Sylvester, were also accused of wrongdoing and have been asked to attend Sunday's meeting.
Deputy chairman Petrus Damaseb of Namibia will head the ethics committee meeting after chairman Claudio Sulser stood down as the Swiss shares the same nationality as FIFA president Sepp Blatter, Bin Hammam's election opponent.
"This move is little more than a tactic being used by those who have no confidence in their own ability to emerge successfully from the FIFA presidential election," the Asian football chief said.
