Dave Jones concedes Cardiff City may decide to sell Joe Ledley in the summer if the club receive a suitable offer.
Ledley has a year remaining on his current contract and talks have yet to start regarding an extension at Ninian Park.
The midfielder has been tipped to move to the Premier League, particularly after Cardiff missed out on the Championship play-offs.
Jones has yet to take a decision on the Wales international's future, but the Bluebirds boss acknowledged he may sell players to freshen up his squad.
"We have not even sat down with Ledley and talked about his contract yet," said Jones in the South Wales Echo.
"But the days when we had to sell players to survive have gone. That situation has been corrected over the last 18 months.
"We will only sell players if it's right for the football club. We may have to sell to take the club forward to the next stage, perhaps sell one to bring in two or three.
"There may be decisions made which will not sit well with everybody, but that's the situation we are in. That's the facts of football and we have to make sure we are stronger for this experience."
Stoke City tried to sign Ledley during the summer transfer window, while West Ham United and Wigan Athletic were both linked with bids in January.
Jones admits he could not accept Stoke's bid earlier in the season, but is wary about seeing Ledley leave Cardiff for nothing in 12 months' time.
He added: "When the money came in for Joe last time, it came in an hour before the transfer deadline.
"It was too late for us to find somebody else, so it wasn't the right time to sell him.
"They thought they could pinch Joe, but the club were in a strong position and we didn't have to sell him.
"Now the decision might be taken if a player has one year left on their contract and the money is right then the decision might be taken out of our hands.
"You can't let players run down their contracts and go for free when their contract expires because that is bad business."