Moura left Sao Paulo to join PSG in January, but the Brazil international has struggled to make a sustained impact with the French champions.
The 21-year-old recently insisted that he is happy with PSG after he was linked with a return to his former club when the transfer window reopens.
Juvencio would welcome the prospect of signing Moura on loan, but conceded that it will not be easy to conclude a deal.
"Of course I am interested," Juvencio is quoted by UOL. "Lucas Moura is my total priority. I talked with him recently, he visited the training ground, went to the dressing room.
"Let's see if it's possible. I'll do what I can. I'll try to bring him back on a year-long loan, then he can extend his contract with PSG for a year, or I'll give them another youth player.
"I know it won't be easy, but I want him here. I am waiting until we are in a safer situation in the league before dealing with this."
However, Moura's agent Wagner Ribeiro has dismissed the likelihood of the player leaving PSG to return to Sao Paulo.
Ribeiro said: "There is no chance. Lucas Moura has been playing, he likes the environment, his team-mates, Paris.
"He is doing very well there and Paris St Germain invested €43million to sign him. He has just bought a house there, left the hotel and his mother is going to live with him."