A Chinese developer has been given an ultimatum by a local authority to clarify its intentions for a "new" Crystal Palace or risk losing rights to the project.
Bromley Council has asked the ZhongRong Group for plans within 14 days.
The group wants to build a new cultural attraction and restore the surrounding park in Bromley.
Council leader Stephen Carr said it needed "to reassure local people" Crystal Palace Park would be improved.
The company's 16-month "exclusivity agreement" expired at the end of January. Bromley Council said it would start opening negotiations with other parties interested in developing Crystal Palace if detailed plans are not obtained.
