The Brazil international is currently on international duty for the Selecao in the Olympic Games, and has emerged as a transfer target for Manchester United.
With the Old Trafford side on the verge of agreeing a fee with Sao Paulo for the midfielder, PSG have come in with a last minute bid, which is believed to be more than United are offering.
Lopes has confirmed that contact has been made by the French side, but that the player will make the final decision over his future destination.
“We have been probed by PSG about Lucas,” Lopes told Le 10 Sport, translated to English by Sky Sports.
“Leonardo has a very good relationship with Sao Paulo. But for now nothing is definite.
“The possibility exists but it is down to the player’s interests. The policy of Sao Paulo is to follow the desires of the player. If the player wishes to leave, Sao Paulo will not create any obstacle. But we must receive a proposal that is appropriate.
“It’s a financial issue. Paris Saint-Germain is a big club in European football and if the player’s interests and also the club’s are met, I do not see why it would not happen,” he concluded.
By Gareth McKnight