Wigan Athletic manager Roberto Martinez has hit out at Birmingham City's public pursuit of French winger Charles N'Zogbia.
The Blues claimed on Wednesday to have made an improved bid for the talented 24-year-old, but Martinez says the new offer is far from satisfactory.
He commented:"We had a couple of offers in May and now the offer is less than the one we had in May and then they come publicly in the press. It doesn't look serious to me.
"The valuation is very clear. If the team matches it he can speak with them. Until that happens he is a Wigan Athletic player.
"The transfer window brings you that distraction, but when you get other managers talking about your players, that is really disappointing – to unsettle players and the press with no substance behind it.
"I don't know the reason behind it, whether it is to get the fans' hopes high in your football club, I don't know.
"Charles has had a difficult few days and it is our fault. We should not allow the transfer window to be open when the competition is ongoing.
"I don't think it is respectful to the league or the fans and it needs to be considered by the authorities."