Sunac declined to comment.

The bond restructuring will include both corporate bonds and asset-backed securities, the sources said, although no concrete proposals had yet been put forward.

The Beijing-based developer has extended repayment for a 4 billion yuan bond due earlier this year, and is restructuring its offshore debt after missing some payments.

Other cash-strapped developers that have extended the repayment of individual onshore bond obligations are also expected to engage in debt restructuring, one of the sources said.

Shenzhen-based developer Logan Group has proposed restructuring all of its onshore bonds due to mature in May 2027. Guangzhou-based R&F Properties said last week it had finished extending all of its bonds, worth 13.5 billion yuan.

($1 = 7.0446 Chinese yuan renminbi)

(Reporting by Steven Bian, Shuyan Wang, Kevin Huang in Shanghai, Clare Jim in Hong Kong; Editing by Edmund Klamann)