Gulf foreign ministers are planning to meet on Sunday to discuss Yemen's political crisis, but have made no mention of another deal signing, although Yemeni officials in the opposition and government said they may try again to ink the twice-thwarted deal on Sunday.
In the capital Sanaa and Taiz, to the south, protesters called on Saleh to end his nearly 33 years in power.
"Zayani, Zayani, we need another president," they shouted, referring to Abdullatif al-Zayani, secretary general of the Gulf Cooperation Council (GCC), who has headed mediation efforts.
Saleh first refused to sign the GCC deal in April when he said he would only sign in his capacity as ruling party leader, not president. Last Wednesday he backed out in objection to the opposition's inclusion of a politician he did not want to be among those who would sign the deal.
Yemen, where half the 23-million people own a gun, and already facing regional rebellions, has become a concern for regional stability among its Gulf neighbours, particularly neighbouring oil giant Saudi Arabia, and the United States, which has seen Yemen as an ally against al Qaeda.
In his widely anticipated speech on US policy in the Arab world, President Barack Obama said on Thursday that Saleh needed to "follow through on his commitment to transfer power".
On the streets of Sanaa, Obama's words received mixed reviews. Some protesters were optimistic that his call for a transition meant the US president was on their side. Others argued he did not go far enough in confronting Saleh.
"The American position is still weak towards President Saleh. We were waiting for Obama to call on Saleh to leave immediately," Samir Abdullah said.