"Great players like Messi will always be put in PSG's list. Of course, it is not the time to talk about it or to dream about it. But we are sat at the big table of the clubs following this closely," Leonardo told France Football.
"Actually, no, we are not sat yet but our chair is reserved there, just in case. Four months [before the end of the season] in football, it is an eternity, especially at this time."
The two players are contracted with PSG until June 2022.
"I hope they are convinced that PSG is a good place to be right now for a very high level and ambitious player. We just have to find an agreement with their desires, their demands, our expectations and our possibilities," Leonardo added.
"We are not begging them: 'Please, stay.' It is more argued than this. The ones who really want to stay will stay. We exchange regularly and I have good vibes on both those cases."