The fight will take place at the AO Arena Manchester on the same card as Amir Khan versus Kell Brook. Jonas was originally scheduled to fight Ewa Piatkowska for the title, however the Polish fighter contracted Covid and had to withdraw.
Jonas was the first female boxer to compete for Team GB and the first female boxer to represent the United Kingdom at the London 2012 Olympics.
Instead, ‘Miss GB’ will face the seasoned Uruguayan Namus in her third attempt at the World Championship.
Namus has been a professional since 2007, and her 32-fight career culminated in a win over the IBF World Female title in October 2017. She has more experience than Jonas, having fought in more than twice as many fights and fought in three times as many rounds.
Jonas feels she will finally achieve her objective after two prior world title bouts – a contentious draw decision against WBC and IBO champion Terri Harper in 2020 and going the distance with strong rival Katie Taylor last year.
Despite the late change of opponent coming just over a week before fight night, Jonas is unfazed and believes she must adhere to her own game plan to win.
Natasha Jonas of Liverpool will now fight Chris Namus, a former world champion, for the vacant WBO World Super-Welterweight Championship on February 19 in Manchester, live on Sky Sports Box Office.