On-loan Rochdale defender Dean Holden has admitted he was shocked by his sudden exit from Chesterfield.
The 32-year-old had featured in 16 games for the Spireites this season, but was allowed to move on.
"John Sheridan pulled me aside and said Rochdale had come in for me on loan," he told BBC Radio Manchester.
"I'd played most games this season so it was a shock but he told me it was the right decision because he was going to change the team."
Holden joined Chesterfield in January and played 17 games as they were crowned champions of League Two.
The deal to bring him to Spotland involved Neal Trotman moving in the opposite direction, and said he was impressed with Spireites manager Sheridan's honesty during the transfer.
"He said to me 'it's a good move for you, you can go and play and secure a longer term contract,' which made me believe I wasn't going to play much there," he added.
"I left on brilliant terms with John. I'm still thankful for him bringing me there in January in the first place and having the success we achieved last season is something I will never forget.
"I'd rather be told now than come the end of the season and be messed around and then be told at the last minute."