I always thought a key point was that Kevin was so self assured in his early days here and that he didn't give a monkey's when others questioned his decisions. This seemed to change during 95-96 season somewhat.
I remember there was negativity about Beresford (something about him having a dodgy knee or failing a medical) and Bracewell signing and Kev just plowed on through . Same with the signing of Cole there were people within football who were like "What ? He's spending how much on him ?" and Keegan was "like this lad's got it" . Even the signing of Beardsley, voices within the club weren't happy about that signing because of his age and Kevin was adamant. You can look at the sale of Andy Cole as a larger example that KK was completely sure of himself.
Then there definitely seemed to be a change of Special K's mentality and he started listening to the media and the naysayers. To me this started with the signing of David Batty which seemed to be on the back of people saying that we couldn't win the title playing the way we were. Then over time and with the loss of the title this seemed to validate the criticism's of him with a lot of people and perhaps in Kevin's mind. Culminating in when he left England and saying he tactically wasn't up to it.
I think there's something in that.
I always remember around the time that we signed Tino, I read this article by Brian Clough in one of the tabloids. He said that when he was manager of Notts Forest, during their title-winning season, he was very tempted to make sure of success by buying another player towards the end of the transfer window. In the end, he decided to hold his nerve, because a new player at that stage might be difficult to integrate, and might be seen by his existing squad as a vote of no confidence in them. For those reasons, he decided against entering the transfer market, and he now had similar doubts as to whether it was wise for Keegan to buy Tino.
We'll never know for sure whether things would have turned out differently if Keegan had done differently, but I've since been inclined to think that Clough made the right call. Tino was a good player all right, but he wasn't the player we needed. Including him meant that the Sir Les - Pedro partnership, which had been so fruitful, was disrupted, with Beardsley being pushed out right. The weak link in the side, and the player that should have been replaced, was Gillespie. We needed a wide player.
I recently saw an interview with Sir Les, where he himself said that changing the line-up to bring in Tino was a significant error. It's not that Tino can be held 'to blame'. It's just that he was the wrong player at the time.