Najwan Ghrayib - cost £1m and played 5 games
EDIT - I see that he's already been mentioned. However, my search of the thread didn't turn him up because I'm the first to spell his name correctly
Our stout scout at the time, Ross McLaren, eulogised over Najwan, some quote about him being the best left-back he'd seen. Tottenham pulled out of a move for him over worries about water on the knee. That synovial fluid issue perhaps prevented him playing more for us. Or maybe he was shite all along. Must admit I had high hopes for him. At the time Gregory was going all England XI on our asses. An Israeli with a dodgy knee seemed the very height of exotic intrigue.