Questioned by Sport Bild on who he would bring in if funds were unlimited, though, the former Nice boss picked out French World Cup star Mbappe and mercurial talent Hazard as his ideal picks.
"Kylian Mbappe and Eden Hazard," he said, before adding: "This is just for fun!
"Mbappe is unbelievable. He is 19 yet so mature and so clever. He makes the difference with his intelligence, playing for the team, and is fast.
"And if Hazard has the ball - ooh la la - he is so strong. It's a pleasure to watch him."
Hazard is understood to be a big-money target for European champions Real Madrid, while Mbappe completed a permanent transfer to PSG this summer after a season on loan.