Indonesian President Joko Widodo is weighing up an audacious 2032 Olympics bid centred on the country’s not-yet-built new capital and is in early talks with SoftBank chief executive Masayoshi Son and other investors for support, sources have said.

The world’s fourth-most-populous country unveiled plans in August to build a $34 billion “smart and green” new capital on the forested island of Borneo to replace the crowded, polluted megacity of Jakarta, which is slowly sinking into the sea. According to the head of Indonesia’s investment board (BKPM), the government is evaluating how to make the unnamed new capital its candidate city for the 2032 Olympics. It had already submitted a bid for Jakarta, and it is not clear whether the new plan would include any events there.

BKPM chief Bahlil Lahadalia told Reuters that the tentative plan had been presented to some investors.

Two people with knowledge of the matter told Reuters that top Indonesian officials had raised SoftBank’s possible backing of the Olympics plan with Son in Jakarta in late February. The people spoke on condition of anonymity as they are not authorised to speak to the media.

Widodo enlisted the SoftBank founder this year, along with former British Prime Minister Tony Blair and Abu Dhabi Crown Prince Sheikh Mohammed Bin Zayed al Nahyan, to act as advisers and help attract funding.

Son met with Widodo and Blair about the new capital on 28 February, and the discussion included sports facilities but not the Olympics, according to a presidential spokesman, who did not answer further questions.

According to the sources, Son is open to the Olympics proposal, which would see SoftBank provide assistance to the Games and SoftBank-backed Southeast Asian ride-hailing firm Grab act as a “mobility partner”.

Lahadalia told Reuters he was not aware of specific discussions with Son. Representatives for SoftBank and Grab declined to comment.

The International Olympic Committee (IOC) will select a host city by 2025.

Son told reporters in January he hopes to invest more in Indonesia, with current commitments including a $2b investment in Grab, Southeast Asia’s biggest ride-hailing firm, last July. A separate source told Reuters that while Son was still assessing plans for the new capital, an investment announcement was likely to come in April and involve Grab.

Grab CEO Anthony Tan wrote on LinkedIn last week that he “was super stoked to have joined the discussions on Indonesia’s new capital city” and was eager to work with SoftBank “to develop critical infrastructure for the new capital city”.

The Olympic Games, which place a heavy financial burden on host cities, face a challenging year as the coronavirus outbreak raises the prospect that the 2020 Tokyo Games could be cancelled or postponed – something the IOC and Japan say won’t happen.