Mick Channon if I remember correctly
Channon wasn't poor at City by any means; he did OK. Nonetheless, I think it's fair to put him in this list. He was a big letdown compared with his reputation as one of the top strikers in the country and in view of the fact that he was bought as the last piece in the jigsaw, intended to help a team that had just missed out on the league into one that could win it.
I'd also nominate Alan Kernaghan, who looked pretty good for Boro and the Republic of Ireland. We paid a fee for him that amounted to about 50% of the British transfer record, so the equivalent of £50 million or so today, and he was simply awful for us. I remember one game at Elland Road where Brian Deane gave him such a torrid afternoon that I was embarrassed for him.
Finally, I'd suggest Georgios Samaras. The only major signing we made with the money we received from selling Shaun Wright-Phillips, we needed the Pearce's "uncut diamond" to come good. Eight league goals for us in over 50 appearances certainly didn't qualify as doing so, yet we still used to get people on here saying might. Was never, ever going to happen.