Nadal, a record 14-time men’s champion at Roland Garros, previously said he expected to retire later in 2024.
The former world number one missed last year’s clay-court Grand Slam through injury and has barely played over the past 18 months.
But Nadal, 37, has been encouraged by his form and fitness in recent weeks.
“In some way I don’t want to close 100% the door,” he revealed in a news conference on Saturday.
“Physically I feel better, I am improving in different ways and I have less limitations than three or four weeks ago.
“I have given myself the chance to play Roland Garros – maybe one more time, maybe not.
“I am feeling competitive in the practices. I am able to play almost anyone. That has given me some hope.”
