Crystal Palace boss Roy Hodgson admits Wilfried Zaha has another hamstring injury.
Zaha missed defeat to Tottenham on Saturday.
Hodgson said, “He has a hamstring injury he picked up against Chelsea. It was always extremely unlikely he was going to recover in time, basically it's trying to get him fit for Manchester United.
“Wilf being Wilf never wants to rule himself out and hopes that miraculously, despite not having trained, something might happen between Friday and Saturday that would allow him to get out there, but that wasn't the case as both my doctors and physio staff had told me."