Monaco boss Leonardo Jardim concedes they could yet lose midfielder Thomas Lemar this month.
The France winger has been linked with Arsenal and Liverpool this week.
“All the players who were important last season are important to keep for the club," Jardim said at a press conference.
“But it has been shown over the years that it's not always possible to keep the players, and you know how our project works. So our goal is to work well with players who will stay here after the transfer window closes."
He continued: “It's not only about [Kylian Mbappe], all the young players who were here last year and had a great season.
“Fabinho, Lemar, Kylian, we're talking about them joining other clubs, but they stay focused.
“Of course, Fabinho and Lemar are older, they may be a bit more mature, but Kylian, even these last two days, he's been working well. They know that the most important thing is the pitch."
Source: tribalfootball.com