Winger Zaha joins Manchester United in a £15million switch after Monday's npower Championship play-off final showdown with Watford, and Eagles manager Ian Holloway is backing him to sign off in style.
"It would be a nice fairy story," Holloway said.
"Wilf will help Manchester United win games. I've never heard anyone talk about one player so much.
"He just needs to be left alone to play because his talent is so fresh and real and exciting.
"He might do enough right to get us what we need and that would be wonderful. We feel like we are losing a family member."