South Korea national team midfielder Jens Castrop faces a lengthy spell on the sidelines after undergoing shoulder surgery, casting serious doubt on his availability for the 2027 Asian Cup. Borussia Mönchengladbach announced on August 8 that the 23-year-old would have surgery in the coming days and be out for several months.
The club's sporting director, Ruben Schröder, called it "very sad news for all of us" and expressed hope for a quick recovery. The injury, a dislocated shoulder, occurred without contact during a friendly against FC Rottach-Egern. German tabloid Bild reported Castrop suffered severe pain, was carried off on a stretcher, and caused a 10-minute stoppage in play.
Why surgery became necessary
Castrop was faced with a choice between conservative treatment and an operation. While conservative management would have meant only a few weeks out, further examinations showed surgery was unavoidable, extending his absence to months. This is a significant setback just before the start of the 2026-2027 season. It compounds frustration for the player, who also ended last season early with a thigh injury.
What it means for South Korea
Castrop's injury is a major blow for the Korean national team setup. The Korea Football Association is set to appoint an interim coach ahead of September A matches against Ecuador and Uruguay, which Castrop will now miss. The bigger concern is the 2027 Asian Cup in Saudi Arabia. His participation is in jeopardy unless he can swiftly regain full fitness and match sharpness. The current midfield options for the Taeguk Warriors can be viewed on our squad page.
His changing role at club level
According to German magazine Kicker, Castrop mainly played as a wide wing-back last season but was slated for a more central midfield role moving forward. His versatility made him a highly valued asset in coach Ujine Polanski's plans. Mönchengladbach noted the "price of the big win in the friendly was high," having lost a key player for a long period.
The recovery timeline and schedule impact
Castrop now faces an extended rehabilitation process. His absence is a painful personal and team setback with about two and a half weeks until the DFB-Pokal first round. The national team, after September's friendlies, will prepare for the final round of World Cup Asian qualifiers, a schedule visible on our fixtures page. By the time Castrop is potentially ready to return, the final Asian Cup squad may be nearly decided. The speed of his recovery will be a critical factor for both his club and country in a vital season.
