Micheletti Sunday rejected Arias' proposal to allow Zelaya back to head a government of national reconciliation until elections which would be moved up to October, saying it also interfered with Honduras' internal affairs.
Zelaya has announced he will try again to return to Honduras on Friday. In the days after his ouster, he tried to land in Honduras only to find the airport runway blocked by military troops.
Chavez declared at the beginning of the crisis on June 28 that he wanted to bring down the post-coup government in order to return Zelaya to power.
OAS Secretary General Jose Miguel Insulza and Arias have warned of civil war if agreement is not reached on the governance crisis.