Denmark and Celtic goalkeeper Kasper Schmeichel announces his retirement from professional football at the age of 39 after failing to recover from a serious shoulder injury. Multiple outlets report that Schmeichel is unable to regain sufficient fitness to return to playing. The injury occurred during Denmark’s Nations League quarter-final defeat by Portugal in March 2025. Sources say Schmeichel continued playing for Denmark even after his team had used all their substitutes. After the injury, he spends time attempting rehabilitation but ultimately reaches the conclusion that recovery is not possible enough to continue at a professional level. BBC Sport and other reports frame the retirement as final, with no indication that he will attempt a return in the future. While some coverage includes additional detail about the match circumstances and timing, all accounts agree that the shoulder problem is the decisive factor behind his decision to stop playing.