article_snippet: The former Manchester United striker celebrates in front of Wenger .
article_snippet: Manchester United finished with ten men after the dismissal of Angel di Maria in the second half.
article_snippet: Louis van Gaal and Louis van Gaal assistant Ryan Giggs gesture on the touchline during United's defeat by Arsenal .
article_snippet: De Gea also paid tribute to the 9,000 travelling Arsenal fans who made their way to Old Trafford on a Monday evening for a sixth FA Cup.
article_snippet: Some of Arsenal's 9,000 travelling fans celebrate at Old Trafford after the final whistle .
article_snippet: I have huge respect for the fans to come here.
article_snippet: To come here on a Monday night, with 9,000 fans, shows you the huge size of the club. '