The United States and Russia agreed to open up evacuation routes for civilians and lightly-armed militants in eastern Aleppo, according to a text of the proposal seen by US media.
The agreement will be implemented within 48 hours, Reuters reports with reference to an opposition official who said rebels still had to respond to the proposal.
The Syrian government is to guarantee a safe exit. If implemented, the deal will have militants from the Nusra Front terror group brought to the Idlib province.
Other rebels will be free to go elsewhere as long as they leave heavy weapons behind.