Martinez was taken off on a stretcher during United’s 2-0 defeat at home to Crystal Palace on Sunday, with Ruben Amorim admitting it looked a “serious situation”. It is unwelcome news for the United boss, who has struggled to turn things around at the club since replacing Erik ten Hag in November.

Patrick Dorgu could be handed his debut when Manchester United take on Leicester City in their FA Cup fourth round clash on Friday night. United made signing a left wing-back a top priority during the January transfer window with the 20-year-old joining from Lecce in a deal worth an initial £25million fee.

Manchester United trio Harry Maguire, Kobbie Mainoo and Bruno Fernandes will have to tread carefully when Leicester City visit Old Trafford in the fourth round of the FA Cup on Friday night. United booked a fourth round date with the Foxes after beating Arsenal on penalties in the third round at the Emirates Stadium last month.

Manchester United will host Ruud Van Nistelrooy’s Leicester City side in the fourth round of the FA Cup.BUY TICKETS TO MAN UNITED VS LEICESTERThe Red Devils qualified for the fourth round after

Ruud van Nistelrooy is back at Old Trafford this week as Leicester City visit Manchester United in the FA Cup.