The 35-year-old has been out of action since July 2021.
Conor McGregor's comeback fight has been cancelled due to injury just two weeks before he was due to face Michael Chandler in Las Vegas."Conor McGregor is out of 303 versus Michael Chandler with an injury," UFC chief executive Dana White announced in a video posted on X. Light heavyweight champion Alex Pereira will defend his belt against Jiri Prochazka in the new main event.
Marshall beat Shields as an amateur boxer before she lost to the American fighter via unanimous decision in 2022.
Tom Aspinall, Paddy Pimblett and Muhammad Mokaev are also on the card at the Co-op Live event.