It would be the country's second-largest deal following the $4.8 billion acquisition of Saigon Beer Alcohol Beverage Corp in 2017 by Vietnam F&B Alliance Investment Company, according to data from Refinitiv.

"We have chosen an adviser and are working together closely to prepare needed documents for the deal," a spokesperson for Mobile World Investment Corp told Reuters in an emailed statement.

"The deal is expected to complete by the first quarter of 2023," the spokesperson said, declining to comment on valuation and other details, citing confidentiality.

The sale is likely to attract interest from local and international retailers as well as financial investors, one of the sources told Reuters, declining to be name as the matter is confidential.

Mobile World Investment, co-founded and led by Vietnamese businessman Nguyen Duc Tai, joins a growing list of companies and funds trying to sell their consumer investments and businesses in Southeast Asia as the region's economy rebounds from COVID-19 curbs.

Private equity firm CVC Capital Partner is in talks to exit top Indonesia snacks maker GarudaFood Putra Putri Jaya, while Restaurants Development Company is exploring the sale of its KFC franchise business in Thailand, Reuters has reported.

Mobile World Investment, which has a market value of $4.2 billion, has been revamping and automating the back-end activities of Bach Hoa Xanh to cut costs and boost profitability.

The company has also launched a recruitment drive to hire more than 3,000 employees at Bach Hoa Xanh, Mobile World Investment's website shows.

Bach Hoa Xanh started in 2015 as a minimart chain specializing in selling fresh foods and daily basic needs, according to its website.

It now has more than 1,700 stores in Vietnam's southern and south-central provinces and ranks among the top three biggest modern grocery retailers by revenue in the country, according to Mobile World Investment's website.

Besides Bach Hoa Xanh, Mobile World Investment runs the biggest mobile phone retail chain in Vietnam by market share, The Gioi Di Dong, and the country's biggest consumer electronics retail chain, Dien May Xanh, it says.

The group has a presence in Cambodia and Indonesia via its consumer electronics retail chain business, its website shows.

Its second quarter net income dropped 6.8% year-on-year to 1.13 trillion Vietnamese dong ($48.15 million), while revenue rose 8.5%, according to Refinitiv data. Shares in the group have risen 28% over the past year.

($1 = 23,470.0000 dong)

(Reporting by Yantoultra Ngui in Singapore and Phuong Nguyen in Hanoi; Editing by Kane Wu and Emelia Sithole-Matarise)

By Yantoultra Ngui and Phuong Nguyen