Paris Saint-Germain has reached out to Real Madrid as they've become "frustrated" by constant speculation about a potential move for Neymar.
Neymar moved to PSG from Barcelona for €222 million last summer.
"We don't like it at all and we have spoken to Real Madrid," Nasser Al-Khelaifi said.
"It's a bit frustrating, it's not fair that other clubs talk about our players. We have a good relationship and they respect PSG, and I hope that's the truth. We respect Real Madrid, their president, Florentino Perez, but I think that it's important for everyone not to work behind the scenes.
"I don't know if he understands me. If there is something, we speak, speak with Florentino Perez or whatever it is and we speak about what we like and what we don't like. It's what we want with all clubs, not just Real Madrid. Fighting amongst each other is not the way PSG works and I hope other clubs don't do that to us."