"Darren McKay, who said he had to stand on a milk crate at his first Albion match in 1979, told the BBC that the club "have never had it so good", ahead of his flight to Amsterdam.
"I don't know how many games I've been to since, but it must be well over 1,000 now," he said.
"We need to fully enjoy this incredible period in our club's history. We visit the home of a four-time European champion, play in front of 55,000 fans and the bookies have us as big favourites to win."