The deal, however, faltered after Yuexiu's board opposed the move over worries that Evergrande's unresolved indebtedness would create potential complications in completing the transaction smoothly, they said.
Once China's top-selling developer, Shenzhen-based Evergrande has in recent months sought to raise funds by offloading assets - from properties to stakes in subsidiaries - both in mainland China and in Hong Kong.
Evergrande and Yuexiu did not respond to requests for comment.
The people declined to be identified due to confidentiality constraints.
Evergrande bought the harbourside building, which is located in Hong Kong's commercial and night life district and covers an area of 345,000 square feet, from local peer Chinese Estates Holdings for HK$12.5 billion ($1.61 billion) in 2015.