Manchester United, competing in the English Premier League, announced on Monday that defender Lisandro Martinez will be sidelined for eight weeks due to a knee injury sustained during the 3-0 victory over West Ham United on Sunday. United stated: "Lisandro Martinez has suffered an injury to the medial collateral ligament in his knee and is expected to be out for at least eight weeks." The Argentine defender left the pitch in the 71st minute after being injured when West Ham's Vladimir Coufal landed on his knee during a challenge. Martinez had already missed nearly four months earlier this season after undergoing surgery to fix a recurring foot issue he first experienced against Sevilla in April and returned in January.