Michael Carrick has said Manchester United must move on from their 3-0 thrashing at Tottenham Hotspur and focus on Wednesday's "make or break" FA Cup quarterfinal replay at West Ham United.
United conceded three goals in six minutes as they were beaten by title hopefuls Spurs on Sunday, and return to the capital this week looking to keep their final hope of a trophy this season alive.
Carrick told MUTV: "Wednesday has got to be the focus. We move on to a massive game. We all know what that means, and it is make or break on the night."
Anthony Martial could have given United the lead at White Hart Lane, seeing his shot saved by Hugo Lloris when the score was 0-0.
Van Gaal criticised the Frenchman for not finishing a chance he had made for himself, and Carrick added: "Anthony had a decent chance and, when you come away from home in a game like that, you need to take the chances you get.
"Unfortunately, we didn't do that today and we have paid the price."
United's defeat was compounded by teams around them in the table picking up results with City, a place above them in fourth, beating West Brom 2-1 against West Brom, while West Ham are a point behind in sixth after drawing with Arsenal.
They are now four points adrift of the top four in the Premier League.
Carrick said: "It is not the weekend we wanted at all -- but there are a few weekends left yet, so things can happen and we have seen that in all sorts of different ways."