(Reuters) -Starbucks' ( SBUX ) China business has attracted offers for a potential stake sale, valuing the coffee chain unit at up to $10 billion, CNBC reported on Wednesday, citing people familiar with the matter.

Asia-based private equity firms Centurium Capital and Hillhouse Capital as well as U.S. peers Carlyle Group ( CG ) and KKR & Co ( KKR ) are among the contenders vying for a stake in Starbucks' ( SBUX ) China business, the report added.

There is a possibility of Starbucks ( SBUX ) retaining a 30% stake, with the rest split among a group of buyers, each holding less than 30%, the CNBC report said.

Starbucks ( SBUX ), Centurium, Hillhouse, Carlyle and KKR did not immediately respond to Reuters requests for comment.

Reuters could not immediately verify the report.

Starbucks ( SBUX ) said last month that it is not currently considering a full sale of its China operations, after the coffee maker kicked off a formal sale process of its China operations in May.

Almost 30 domestic and foreign private equity firms in China have submitted non-binding offers and Starbucks ( SBUX ) is in the process of evaluating the offers, deal structure proposals and value creation pitches from the bidders, the report said.

The bidders could be shortlisted within two months, but the entire deal is unlikely to be completed by the end of this year, CNBC said.

(Reporting by Anusha Shah in Bengaluru; Editing by Rashmi Aich and Mrigank Dhaniwala)