Sebastian Fundora and Tim Tszyu are set for a WBC junior middleweight title rematch this summer in the U.S., sources tell The Ring.

One option in play: July 19 in Las Vegas.

A rescheduled fight between Keith Thurman and Tszyu was planned for this summer in Australia before Tszyu exercised the rematch clause to enforce a contracted return bout with Fundora.

Thurman, sources said, will now land a title shot at the winner of this summer’s Fundora-Tszyu rematch, per PBC’s plans.

That rematch clause could be triggered before or after Fundora’s first title defense. That took place last month when Fundora stopped Chordale Booker in the fourth round of a routine title defense.

Fundora (22-1-1, 14 KOs) will vacate his WBO title ahead of Friday’s scheduled purse bid for a mandated defense vs. Xander Zayas, sources said.

Zayas will now be ordered to fight Jorge Garcia Perez, the next available contender, for the vacant WBO title. The Mexican is coming off a major upset win over Charles Conwell earlier this month.

Fundora was originally lined up for a high-profile fight with former champion Errol Spence Jr. that was repeatedly delayed and ultimately cancelled.

The 27-year-old American scored a major upset when he defeated Tszyu by split decision last March in one of 2024’s best action fights. Fundora, 27, accepted the fight on short notice after Thurman suffered a torn biceps.

Tszyu (25-2, 18 KOs) was affected throughout the bout by a gruesome cut on his forehead that covered his face in blood and impacted his vision. The 30-year-old Australian also had to contend with The Towering Inferno’s dizzying 6-foot-5 ½ inch height and 80-inch reach.

Tszyu landed a title shot coming off the loss and was upset yet again, this time via third-round TKO vs. Bakhram Murtazaliev in October in Orlando, Florida.

Tszyu returned to winning ways with a fourth-round TKO of Joey Spencer earlier this month in his native Australia.

BoxingScene first reported the news of the Fundora-Tszyu rematch.