French international centre-back Kurt Zouma's playing in current season will be most likely over. Here's the official note, released by Chelsea, explaining about the injury occurred to him:
"Chelsea Football Club's medical team have diagnosed that Kurt Zouma sustained an injury to his anterior cruciate ligament during yesterday’s (Sunday) Premier League game against Manchester United.
Kurt will undergo surgery in the next 48 hours and is expected to be out for approximately six months".
Source: transfermarketweb.com