Monaco head coach Leonardo Jardim hopes to keep Kylian Mbappe, but has conceded more players could leave this summer.
Bernardo Silva has already left the Ligue 1 champions to join Manchester City while Mbappe, 18, has been linked with Arsenal and Real Madrid.
Thomas Lemar, Fabinho, Tiemoue Bakayoko and Benjamin Mendy could also reportedly be on the move this summer.
Speaking about Mbappe, Jardim told RMC: "I have not spoken to him, because he knows how we work, that we want to keep him.
"I think the club and he will make the best decision."
As well as Silva, Monaco have already seen Nabil Dirar and Valere Germain depart this summer.
And Jardim has suggested that more players could be sold due to Monaco's business model.
"I hope to keep the right players," he said. "It is not just me, all the coaches of the world [would] like to keep the best players.
"But with the Monaco project, maybe it's not possible to always keep the best. We're going to look at what's going to happen.
"Three players left. Other players could leave us. Everyone knows our project. It did not change even if we have won the title. The project is the same. The goal is still win. Nothing changed.
"It's very important for us. What matters is the training of the young players and the quality of our game. The only thing that changes is that we are going to start the season being the defending champion."