Chesterfield boss Paul Cook is unhappy with clubs talking publicly about their interest in striker Eoin Doyle.
The 26-year-old is the top scorer in the Football League with 22 goals from 27 games in all competitions.
Rotherham United assistant Paul Raynor revealed on Friday that the Millers had held discussions with the Spireites.
"I don't understand why clubs conduct themselves in the media. I don't think it's correct," Cook told BBC Radio Sheffield.
"At any club today, a player has a price. So if you want to meet a price to buy a player, then go and do it and do it properly and then announce it to the media.
"I can't get involved in all kinds of speculation, that's for other people to do.
"I think the best thing for us to do is that from now if we have something to announce then we will, and if we don't, we will be quite happy to do that too."
Scottish Premiership side Celtic and Championship sides Cardiff, Derby County and Millwall have also been linked with a move for the former Hibernian player.
Irishman Doyle struggled for consistent form in his first season with the Spireites, scoring 13 goals in 51 games, but has flourished in League One.
He scored back-to-back hat-tricks in games against Scunthorpe and Preston in September and equalled his tally for last season by the first week of October.