The non-league side have re-done the 80’s hit A Message To You Rudy, by the Specials with the guidance of musician Mike Dobie.
Neither the club nor the makers of the video were aware of the presence of a man making aircraft gestures until a United fan called to complain after seeing the video on You Tube..
Chief executive, Alan Williams, told The Guardian: "We immediately pulled it off the website and removed it from YouTube.
"We've called in the police to see if they will press charges and we have identified the idiot responsible and banned him from the club for life.
"He's not welcome here now or ever again. This should be an unbelievable week for us, playing the biggest club there is, and if anyone thinks Crawley would deliberately insult Manchester United over something so sensitive, that is what gets to me more than anything."