Adams or Micky The Millionaire as he was nicknamed after his opening speech to the players on the first day of his appointment as City manager, came in after the disasterous appointment of Peter Reid, had saved Coventry City from relegation in their final season at Highfield Road and took City to their highest ever finish in the Championship.
However, things went very sour both on and off the pitch and he was sacked following an FA Cup exit to Bristol City in January 2007.
"The only unfinished business I have there is with some people behind the scenes," Adams said to the Yorkshire Post.
"I don't see it as a revenge mission because I am not emotional in that way and I just want to do a job for Sheffield United - but there are people behind the scenes that I would rather not see. What happened was they sold my best players without consulting me," he recalled. "Gary McSheffrey, James Scowcroft and Dennis Wise - although not for money. That's all I'm going to say.
"From finishing eighth in the table, we lost three of our better players. When you have been a player at any football club, there is an affinity there. What happened soured that a little bit - but for nothing other than the facts I have given you.
"The fans were great and they are decent fans," he added. "They have been long suffering since they left the Premier League. They have seen various managers come and go but I tried my best there under difficult circumstances. My departure wasn't a happy one but I think that I can hold my head up high for the job I did."