Katie Taylor is still interested in fighting Amanda Serrano after the pair were twice scheduled to meet earlier this year.
Puerto Rico-born, New York-based Serrano, a seven-weight world champion, has not fought since January after fight dates were cancelled versus Taylor, who defends her world lightweight titles against Miriam Gutierrez in London on Saturday.
After Serrano declined a rearranged date in August in England, Taylor (16-0, 6 KOs), 34, from Bray in Ireland, instead fought Belgium's Delfine Persoon in a rematch and retained all four world lightweight titles via unanimous decision.
Taylor, the 2012 Olympic gold medallist, hopes to still meet Serrano (38-1-1, 28 KOs), 32, or other big names such as Jessica McCaskill (9-2, 3 KOs) and Cecilia Braekhus (36-1, 9 KOs) in 2021.
"They are all great fights, hopefully the Serrano fight is out there for me at some point," Taylor told ESPN.
"McCaskill is certainly the champion at welterweight and Mayer is doing well at the division below me. I would like to step in with all those girls.
"Serrano, that's the fight people really want to see. She pulled out twice against me and I worry whether she actually wants to fight."
McCaskill, from Chicago, lost to Taylor on points three years ago, but became undisputed world welterweight champion by beating Cecilia Braekhus in August. The pair are expected to meet in a rematch in the first half of 2021.
"The rematch is going to be very interesting because a lot of people thought Braekhus edged the first fight," Taylor added.
"Braekhus is definitely capable of taking those belts back. It didn't completely surprise me that McCaskill won because McCaskill can make it awkward for everybody."
Brian Peters, Taylor's manager, said the Irish boxer could also take on one of the stars of mixed martial arts in 2021.
"You could have [Cris] Cyborg and Holly Holm in crossover fights," Peters told ESPN. "Also, Braekhus could beat McCaskill in the rematch and that that would be a big fight for Katie.
"Chantelle Cameron, from England, too -- there are so many good fights and of course there's Serrano if she decides what she wants to do, it's hard to keep up with her. You can't rely on her now, it's a pity, that's why we are looking at Cyborg."
For Taylor to remain in the big fights of the scale of her two clashes with Persoon, she needs to overcome Spain's unbeaten Gutierrez (13-0, 5 KOs).
"She's not established but she's better than what people think she is," Taylor said. "I would never be complacent anyway, I made that mistake when I was an amateur and lost a fight, but I always prepare as if it's the hardest fight of my career. She's not well known but it's going to be tough."
Taylor has prepared in Vernon, Connecticut, where she has spent most of this year away from her family in Ireland.
"I came back over to America hoping to be fighting Serrano in March, then got pushed back to May and then July, and I finally fought in August," Taylor added.
"It turned out to be the longest training camp of my life and it's the longest I was away from home for. I hadn't seen my family at all until the week of the fight, but I managed to have a few weeks back home before I came to America to train for this next fight.
"I have a great life over here in Connecticut, I've got a great group of friends through the church. It's remote where I am, but I'm here for the training and the training is great."