Ronaldo's recovery from a career-threatening knee injury is ahead of schedule according to his physiotherapist Bruno Mazziotti as the 32-year-old looks to resurrect his career.
The striker ruptured a tendon in his left knee back in February while playing for AC Milan and has been working alongside Mazziotti and Flamengo and Brazil doctor Jose Luiz Runco in a bid to regain his fitness.
Currently a free agent Ronaldo, who is training with Brazilian side Flamengo, has been linked with a number of European clubs and Mazziotti insisted he is making excellent progress with his rehabilitation.
"We are working to increase the knee's resistance, the results are beyond what we expected. I can say that he is 30 or 40 per cent of the level he was at in the 2002 World Cup," he told www.globoesporte.com.
"He is now a professional athlete doing a pre-season. As he doesn't have a club, his preparation is very lengthy, which will be very important when he is ready to return."
Paris St Germain are in talks with Ronaldo's agent with a view to bringing the Brazilian to the Ligue 1 club.
Alain Roche, the man in charge of recruitment at PSG, has travelled to Brazil where he will spend around 10 days scouring the country's league for possible signings.
High up on his wishlist is believed to be Ronaldo who was also linked in the summer with a move to Manchester City.
