2022 World Cup veteran Zimmerman returns to the USMNT after featuring sparingly in the years since, but the Nashville SC star remains a key veteran defender in the U.S. player pool. The 32-year-old center-back was in January camp under Pochettino, featuring in both matches of that window.
Aaronson joins his older brother, Brenden, in the squad following a breakout season with FC Utrecht. The 21-year-old midfielder was one of the better young attackers in the Eredivisie, registering eight goals and four assists while on loan from Eintracht Frankfurt this season. He earned his only USMNT senior team cap in January 2023, but was a key player for the U.S. in the Olympics last summer.
Harriel, meanwhile, is still searching for his first USMNT cap, having also represented the U.S. at the Olympic Games last summer. This won't be the 24-year-old Philadelphia Union defender's first call-up, though, as he previously joined the team for camp in January 2024.