Paris Saint-Germain boss Thomas Tuchel has acknowledged that Moise Kean has already established himself as an important player at Parc des Princes.
After a poor first campaign at Goodison Park, Everton have allowed the young striker to spend the season with the 2019-20 Champions League runners-up.
The Italian has already contributed five goals and one assist during his seven appearances, his latest strike coming against Rennes on Saturday evening.
After witnessing the 20-year-old's performance in the Ligue 1 fixture, Tuchel told reporters: "He has a big heart, he puts on intensity. He is not afraid, he is courageous. He does what is necessary.
"I wouldn't want to be a defender against him right now, it's really hard to play against him. It's very important for us because we miss that in certain times."
PSG do not possess the option of keeping Kean on a permanent basis.