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.

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While Amorim has earned famous wins at Manchester City and Arsenal in the third round of this competition, Nottingham Forest, Bournemouth, Newcastle United, Brighton & Hove Albion and Palace have all come and won with little fuss at the Theatre of Dreams.

Ruben Amorim's Manchester United are set to host Ruud van Nistelrooy's Leicester City in a 4th Round fixture of the FA Cup 2024-25.