Former UFC strawweight champion Carla Esparza takes on ex-title challenger Claudia Gadelha this June at UFC 225.

Set for June 9 from the United Center, the event remains in the infant stages for putting together a fight card.

However, this one is a bout female MMA fans have been seeking for several years.

The two were first scheduled to fight back in 2013 under the Invicta FC banner. A rematch was rescheduled, but as Esparza posted on Instagram, it didn’t work out.

“For those who don’t know the history, this fight has been in the making since 2013 Invicta FC 4!! 1st time, she broke her nose 4 days before the fight. 2nd time she went to the hospital right after weigh-ins,” she wrote. “It’s the fight game, ish happens. I know this is a fight that fans have wanted to see for years and I am really excited it’s finally happening, 3rd time is the charm (*knock on wood*)!!!! Both of us are much different fighters than we were 5 years ago, so I hope that we put on a great fight and it lives up to 5 years of build up lol!!”

Esparza (13-4) has picked up back-to-back decision victories over Cynthia Calvillo and Maryna Moroz to move back into contention in the division. The first-ever holder of the title inside the Octagon, the 30-year-old dropped the belt in 2015 to Joanna Jedrzejczyk in her first title defense.

In 2014, Esparza bested current 115-pound champion Rose Namajunas via third round submission with a rear-naked choke in the finals of The Ultimate Fighter.

Gadelha (15-3) has lost three of her last six fights, with two of those being defeats in championship matches with Jedrzejczyk. The first in 2014 was a split decision defeat, but the 29-year-old earned herself two years later after besting Jessica Aguilar.

Following a second decision defeat to Jedrzejczyk, Gadelha rebounded with wins over Cortney Casey and Karolina Kowalkiewicz, the latter of which was a submission win in the first round. This past September, though, she lost to Jessica Andrade via decision.

Gadelha was originally expected to compete on The Ultimate Fighter, but the close weight-cuts forced her off the program. Instead, she signed directly with the UFC and made her debut in 2014 with a win over Tina Lahdemaki.