Abidjan, Ivory Coast (CNN) -- A three-man West African delegation won't return to Ivory Coast until Monday, when it will ask self-declared President Laurent Gbagbo to relinquish his post or face a military ouster, a representative of the group said Friday. But Gbagbo remained defiant in his claim that he won a November 28 election fairly -- a claim disputed by challenger Alassane Ouattara and a growing international bloc that has recognized him as the winner of the presidential runoff election. Ouattara and Gbagbo, the incumbent, set dueling deadlines for the other to stand down, but neither show any signs of doing so.
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NEW: West African heads of state to return to Ivory Coast Monday
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NEW: They will again ask Gbagbo to step down or face military ouster
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Ouattara has told Gbagbo to be out by midnight Friday
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Gbagbo wants Ouattara out of Abidjan by Saturday
"He offered to give @placeholder amnesty and other conditions related to a former head-of-state status but he said that these offers will be only available if former President Gbagbo is ready to recognize that he has lost elections," Achi said.