Nottingham Forest, Stoke City and Blackburn Rovers are among the clubs reportedly keeping an eye on John Souttar's situation at Hearts.
The 25-year-old's centre back's contract expires in the summer.
Souttar, who scored in the World Cup qualifier against Denmark this week, is the brother of Stoke player Harry Souttar.
Interested clubs have been given hope by Hearts head coach Robbie Neilson, who told the Daily Record: "It depends what the fee is, to be honest with you.
"At this moment in time, he’s a Hearts player and we’re still trying to get him to continue to be a Hearts player.
"We’ll see where it goes. My job is just to make sure he’s ready for Saturday.
"The better the team does, and the higher up the league they are, it’s harder to keep all the players. “It’s just part of football and something you have to accept.
"We’re speaking to him. There are a number of players we’re speaking to but that’s the way football is. It goes back and forward, back and forwards."
Scottish champions Rangers are also being linked with Souttar.
