Australia鈥檚 Charter Hall and Singapore-based are believed to have shown interest in buying a stake in Cromwell Property Group from its largest shareholder, Redefine Properties.

South Africa鈥檚 Redefine, which owned more than 25% of Brisbane-based Cromwell at the end of June, is understood to have hired an investment bank to sound out potential buyers.

Based on Cromwell鈥檚 current share price, the stake is worth AUD424m (鈧284m). Cromwell has a market value of almost AUD1.7bn

Sources close to Charter Hall confirmed that it had been approached and had expressed an interest. A spokesman for Charter Hall said: 鈥淲e do not comment on market speculation.鈥

A source close to Ascendas-Singbridge said representatives of Cromwell and Redefine had approached the company over different matters in recent months.

When contacted by IPE Real Estate, Marc Wainer, executive chairman of Redefine, reiterated his previous public statement that 鈥渙ur stake is absolutely not for sale鈥, but added that, if he was offered AUD1.20, he might think about it.

Cromwell shares closed on Monday at AUD0.955 per unit 鈥 down two cents after it to list its European portfolio in Singapore on Friday.

Cromwell had hoped to raise up to 鈧1.25bn from the float, at the same time freeing itself of a portfolio that includes three assets it jointly purchased with PFA Pension of Denmark for 鈧205m to . Cromwell has since bought the assets back.

A source familiar with the Cromwell-Redefine relationship claimed Redefine鈥檚 patience with Cromwell management had been tested over three key decisions: the platform in 2015; the failed  (IOF) last year; and last week鈥檚 aborted IPO.

A source familiar with Ascendas-Singbridge told IPE Real Estate that there is an awareness in the industry that Ascendas-Singbridge is looking to acquire a platform in Australia, but he said he did not expect it to be comfortable with what he calls 鈥渢he dynamics鈥 surrounding Cromwell.

The source said he understands AscendasSingbridge had been approached over the IOF takeover and the Singapore IPO but opted out.

鈥淪ome investors thought it weird that Cromwell, an Australian company, should try to list a vehicle owning assets in Europe in Singapore,鈥 he said. Redefine鈥檚 stake in Cromwell is not on the Ascendas-Singbridge radar 鈥渁t this moment鈥, he added.

Cromwell鈥檚 gearing ratio was 45.2% on 30 June, among the highest of Australia鈥檚 listed real estate investment trusts (REITs). This and its reliance on short-term debt last week prompted the international credit agency Moody鈥檚 to put Cromwell on its watchlist for a rating downgrade.

Observers believe that any buyer of the Redefine stake would probably seek to privatise the listed company, which could prove challenging because Cromwell鈥檚 register is dominated by small retail investors.

A source in touch with Redefine told IPE Real Estate that the South African company is likely to hang on to its stake at least until next year because Cromwell pays high distributions to unitholders.