Interesting thread, though it would have been more interesting few years back.
Ivica Olic - Forrest Gump on a football pitch. Though last year he has improved, he's still not a football player.
Robert Kovac - Legrotaglie of the old, completelly unreliable and I never thought he was much good before either, was as always average.
Ivica Mornar, Petar Krpan, Nenad Bjelica, Tomislav Butina, Bosko Balaban, etc. There were tons of them in the past years.