The fight between former welterweight titleholders Victor Ortiz and Andre Berto, slated to meet on April 30 on Fox in prime time at the StubHub Center in Carson, California, is set but the reason Premier Boxing Champions has not yet formally announced it is because it has been getting the co-feature squared away.

Announcement is expected any day as a news conference is tentatively scheduled for Tuesday. But the co-feature ticketed for the card is Jermall Charlo (23-0, 18 KOs), 25, of Houston, making his second world title defense against former titleholder Austin Trout (30-2, 17 KOs), 30, of Las Cruses, New Mexico, who has won four fights in a row since back-to-back losses to Canelo Alvarez and Erislandy Lara in 2013. However, there is a chance Trout may forego the shot at Charlo and challenge England’s Liam Smith (22-0-1, 12 KOs), 27, of England, for a shot at his version of the 154-pound title instead.

The original Ortiz-Berto co-feature -- hence the delay -- was supposed to be a heavyweight fight between former two-time world title challenger Chris Arreola (36-4-1, 31 KOs), 35, of Riverside, California, and 2012 U.S. Olympian Dominic Breazeale (17-0, 15 KOs), 30, of Alhambra, California.

But two weeks ago, just before he was supposed to go to training camp in San Diego with trainer Henry Ramirez, Arreola fractured his right foot.

“Chris got home and was stepping out of his car and he got his foot stuck in the gap between the grass and the concrete on the driveway,” Ramirez told ESPN.com. “I saw the pictures and it was pretty grotesque. The swelling has gone down now but Chris is going back to the doctor. We’ll see how long he is going to be out for, but we had agreed to the fight with Breazeale. It would have been a good fight. Hopefully, it can be rescheduled.”

In his last fight, on Dec. 12 on NBC, Arreola won a majority decision against Travis Kauffman in San Antonio. However, the decision was changed to a no decision on Jan. 5 because Arreola failed his drug test. He tested positive for marijuana, a banned substance, and was suspended for 90 days beginning from the date of the fight, meaning it would have been over by the time he was scheduled to face Breazeale.

In Breazeale’s last fight, on Jan. 23 on Fox, he struggled badly and got dropped before an injured Amir Mansour retired on his stool after the fifth round.