Manchester United defender Lisandro Martinez has sustained an anterior cruciate ligament (ACL) injury.

Manchester United fear Lisandro Martínez could be set for months on the sidelines with the knee injury he suffered during the defeat to Crystal Palace, a source has told ESPN.

Manchester United head coach Ruben Amorim described Lisandro Martinez's injury as a "serious situation" after the Argentine centre-back was stretchered off against Crystal Palace on Sunday. The Red Devils had already fallen behind to Jean-Philippe Mateta's close-range opener by the time Martinez was left crumpled in a heap.