Owen Coyle had steered Burnley to promotion from the Championship into the Premier League, but then abruptly left in January for the managerâ€™s berth at his old club Bolton.
Incoming manager Brian Laws had little time to assess his squad before the transfer window closed and Burnley, who were already slipping down the table, eventually suffered relegation.
Burnley failed to make the Championship play-offs under Eddie Howe last season and chairman Barry Kilby concedes they are still getting to grips with Coyle's exit.
"I don't think people realise the trauma that the complete disappearance of your manager and the coaching staff can leave behind," Kilby said in the Daily Mirror.
"In one week in the middle of your inaugural Premier League season and right in the middle of the transfer window.
"That was tremendously difficult for the club to deal with and we're still recovering from that now."