PSG turned down Atletico Madrid's offer for Edinson Cavani.
Cavani made it known that he wants to leave PSG.
"We are studying the situation. We have received an offer from Atletico Madrid, it was not accepted -- it did not match the player's value," said PSG sporting director Leonardo.
Chelsea is also monitoring Cavani, who is out of contract at the end of this season.
"He's a great player. I played against him and I always loved his mentality and his attitude. His goal-scoring record speaks for itself," said Frank Lampard.