Preston and former Wales striker Ched Evans is facing "potentially life-changing consequences" after developing a serious medical condition as a result of "repeated high-force contact" during his career.
The 34-year-old requires surgery on the issue, which is more common in American football and rugby players, and will be sidelined for the foreseeable future. Evans and his club remain hopeful he will eventually return to action.
"Preston North End can confirm striker Ched Evans will be unavailable for an extended period after developing a serious medical condition," a club statement read. "The 34-year-old forward is facing potentially life-changing consequences as a result of repeated high-force contact which he has received on a weekly basis throughout his career.