Notts County boss Shaun Derry has said there has been informal approaches for goalkeeper Bartosz Bialkowski.
The 26-year-old started 47 matches last term as Notts avoided the League One drop on the final day of the season.
"I've not actually had a formal offer for Bart," Derry told BBC Radio Nottingham.
"But there is always tentative discussions in the closed season, especially for a player who has actually produced."
Bialkowski has made 92 appearances for the Magpies since arriving from Southampton on a three-year deal in June 2012.
"Bart was outstanding for us last year. In many games he single-handedly kept us above water," added Derry.
"I'm not surprised that there are rumours flying around, but that is all they are at the moment.
"I'm thankful that we have a good goalie here at Notts County."