By John Cross For 21 incredible minutes, it felt like one of the great FA Cup upsets was coming to Newport. Rodney Parade buzzed with excitement as no-one could quite believe what they were seeing. From 2-0 up, mighty Manchester United were pegged back to 2-2 and were on the ropes. League Two minnows Newport County, 73 places below the Premier League giants, showed incredible character and passion in a cup tie no-one among the 9,086 crowd will ever forget. Newport were fabulous as they raised their game, got in United’s faces and made it a very uncomfortable cup tie for the visitors. And even …