Paris Saint-Germain coach Thomas Tuchel cannot guarantee Neymar and Kylian Mbappe staying.
Both stars are being linked with Real Madrid.
"There is a lot of speculation which means we have a lot of quality and talent," he said at the Monaco Grand Prix, when interviewed by Sky Sports.
"My wish as a manager and as a coach is clear, as I want all my players to stay at PSG and stay with our project.
"The work is not finished, it has just started.
"My wish is clear, but I can't promise it as that would be naïve and I don't want to be naïve in this business."