Kaka has told Globo Esporte that he is close to making a decision on his future but indicated that he could opt to retire from playing.
Earlier this month, Orlando City said they were in talks about Kaka returning for a fourth season.
And Globoesporte said he could do that, return to his native Brazil to play for Sao Paolo for a year or opt to bring down the curtain on his playing career.
Kaka, a Ballon d'Or and Champions League winner, the highest-paid player in Major League Soccer on over $7 million a year, also revealed that he planned to take a coaching course once he had finished playing.
The Brazil international said: "I finish playing a game and feel a lot of pain. My body starts to feel it, and it no longer brings me that much happiness, it takes a lot more to do the same job.
"Kids can play today and again tomorrow. I'm 35, I take longer to recover, it's a different rhythm. You can feel when the time is coming."
Speaking about how he would approach his future when the time came to stop playing, he added: "To do it like [Zinedine] Zidane is a good idea.
"He stopped, took some time away, decided if it was something he actually enjoyed, studied, did a course, build his way up.
"I'm that way inclined too. Now, there are people who believe I am already ready.
Last week, Orlando CEO Alex Leitao told the Orlando Sentinel that Kaka had "expressed his desire to play another year."
He added: "We gave him an offer and now he's with his family... I think he's thinking about the offer we gave him and we're just waiting for a response. So, we're in negotiations."
On Sunday, New York City FC midfielder Andrea Pirlo said he plans to retire at the end of the current MLS season.