Former UFC bantamweight champion Holly Holm admits that she's intrigued by the idea of making a return to the sport of boxing.

Holm made her MMA debut in 2011 and eventually went full-time with MMA in 2013.

However, she made her boxing debut in 2002, won world titles in several divisions, and was highly regarded as one of the best female fighters of her era.

She left boxing, in 2013, with a record of 33-2-3 and 9 knockouts. Earlier this year, she was inducted into the International Boxing Hall of Fame.

Holm is still under contract with the UFC, with an MMA record of 14-6.

Women's boxing is more popular than ever - and there are certainly big opportunities for Holm if she returned to the sport - like a fight with undisputed lightweight champion Katie Taylor.

“A lot of people talk about it. I’ve always been one of those people that say passion first and everything else falls into place. The reason why I left boxing and came to MMA fully is because I was more passionate about MMA. If feel like if you’re going to do anything in combat sports you need to go where you passion is," Holm said.

“My very last fight in boxing, it was either going to be 135 or 140. 140 was my belt. 135 was my opponent’s belt. She said, ‘I usually fight at 135, not 140,’ but I had already made 135 for MMA, so I was like, let’s fight for 135. She was like, ‘No, no no’ because it would have to be for her belt and she didn't want to put it up, so we ended up fighting at 140,” Holm explained.

“Sometimes I feel like maybe it was unfinished business, and Katie Taylor, that’s the belt she has is at 135. That’s the one weight class I didn’t fight in boxing. I fought at 40, 47, and 54, so to go back and be able to get, you know, a fourth weight class title is always intriguing especially with everything to on. I really didn’t have the passion for [boxing] but now it does intrigue me, but I’m real stuck. I’ve got my contract with the UFC. I love MMA, but it intrigues me."