Northern Star Resources (ASX:NST) may receive a sweetened takeover approach from Gold Fields, which is considering increasing the cash portion of its proposal after its initial bid was rejected on Monday, according to a Wednesday report by Bloomberg, citing people familiar with the matter.

The report said deliberations remain at an early stage, with no certainty that Gold Fields will proceed with a revised offer.

Gold Fields and Northern Star did not immediately respond to MT Newswires' email request for comment.

Northern Star Resources' shares rose 7% in recent Wednesday trade.

(Market Chatter news is derived from conversations with market professionals globally. This information is believed to be from reliable sources but may include rumor and speculation. Accuracy is not guaranteed.)