UFC women’s bantamweight Sara McMann (7-0 MMA, 1-0 UFC) has withdrawn from UFC Fight Night 27, and the UFC currently is seeking a replacement opponent for Sarah Kaufman (16-2 MMA, 0-0 UFC).

Multiple sources close to the promotion today informed MMAjunkie.com (www.mmajunkie.com) McMann was forced to withdraw from the fight for undisclosed reasons.

UFC Fight Night 27 takes place Aug. 28 at Bankers Life Fieldhouse in Indianapolis. McMann vs. Kaufman was slated for the event’s FOX Sports 1-televised main card.

McMann successfully debuted in the octagon at April’s UFC 159 with a first-round TKO of Shiela Gaff. The performance extended her undefeated streak to seven fights.

An Olympic silver medalist in wrestling, McMann signed with Strikeforce in 2012 for a debut against now-UFC fighter Liz Carmouche, but the event on which they were to fight was canceled. She went on to compete under the Invicta FC banner, where she was slated to fight for the promotion’s inaugural bantamweight title. She was signed to the UFC before she could vie for the belt.

Kaufman also fought for Invicta before being scooped up by the UFC. She earned a split-call over Leslie Smith in the all-women’s promotion, which was her first bout after Ronda Rousey armbarred her this past August in a Strikeforce women’s bantamweight title fight.

In the previous incarnation of the now-defunct promotion, Kaufman dominated the competition and won the women’s bantamweight belt in 2010. She lost it in her second title defense, but finished her tenure with a 4-2 record.

Stay tuned to MMAjunkie.com for an update on Kaufman’s new opponent.

With the change, the UFC Fight Night 27 lineup now includes:

For more on UFC Fight Night 27, stay tuned to the UFC Rumors section of the site.

(Pictured: Sara McMann)