Worst player to play for your team?

[Henrik Larsson]

Who are the players over the years that have been terrible for your team?

Players that have been signed as they have looked amazing, but turn out to be a disaster.
Players not fit to wear the shirt

For me it has to be Evander Sno. Loovens ans Samaras , Naylor, Brown (keeper not midfielder),Caldwell, Roy Keane looked like he would be amazing, having played for Man U but he turned out to be ****.