Rousey, 26, says she feels great and that she's itching to get back in the cage again as soon as possible.
“I was obviously not hurt or they wouldn’t be putting me in another fight so quickly,” Rousey said after beating Miesha Tate in the co-main of UFC 168.
UFC 170 goes down on Feb. 22 at the MGM Grand in Las Vegas, Nev.
Rousey fights McMann in the headlining slot, while Rashad Evans battles Daniel Cormier in the co-main.
“I’ve taken such a long time off, I want to fight again,” Rousey said following her UFC 168 win over Tate. “I’m in the best shape of my life now, so it’s the perfect time to go back, and we’ll put on another good show for you guys very soon. This is what I love to do.”
Her opponent, McMann, is a fellow Olympian who holds an undefeated record that includes victories over some of the top bantamweights in the world.
McMann has defeated Tonya Evinger, Shayna Baszler and Sheila Gaff, among others.
Rousey says she doesn't mind playing the role of the heel because she knows she's someone that fight fans love to hate.
Even if they don't like her, they'll pay to watch her fight and that's all that matters at the end of the day.
“It’s the price of the role I was in,” Rousey said after she was booed for not shaking Tate's hand at UFC 168. “When she formally apologizes to my coaches and they accept it, I’ll shake her hand. She’s a great fighter, she had my respect, but she needs to make up for the things she’s done.”