Hadi expressed "reservations about continuing the current negotiations in Sanaa," the envoy Jamal Benomar wrote on his Facebook page, after a telephone conversation between the pair.
The Western-backed leader also "requested they be transferred to a 'safe place' to which the parties should agree," he added.
Hadi fled to the southern city of Aden on Saturday after sneaking out of Sanaa, where he was being held under house arrest by the Shiite Huthi militia that seized control of the capital.
He also welcomed a United Nations Security Council resolution on February 16 demanding the Huthis withdraw their forces and refrain from further unilateral actions.
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Neighbouring Gulf monarchies today welcomed Hadi's escape to Aden and called on Yemenis to support him.
"This is an important step that stresses his legitimacy," the six-nation Gulf Cooperation Council said in a statement.
The GCC called on the Yemeni people and political parties to "stand by the president and support him in exercising all his constitutional duties in order to end Yemen's dangerous situation caused by Huthis."
The council also called on the Huthis to release Prime Minister Khalid Bahah, other ministers and politicians who have been placed under house arrest.
The militiamen have installed a "presidential" council aimed at replacing Hadi.
Hadi tendered his resignation last month, along with Bahah, under pressure from the Huthis but it was never approved by parliament.
In his first statement since escaping on Saturday, Hadi labelled the Huthi takeover as a "coup" and declared all their measures "null and illegitimate".
The process includes turning the republic into a federation of six regions, a proposal the Huthis have rejected, saying it divides the country into rich and poor areas.
Yemen, a traditional US ally in the fight against Al-Qaeda, has descended into chaos since the Huthis seized Sanaa and pushed to extend their control farther afield.