Grenier, who earned his first international cap last week, said he will make a decision once he returns from his stint with France.
Grenier is quoted by the Daily Express: "I'm training here in Uruguay and Brazil. It feels good to be far from France right now because I've heard a lot of things about me lately.
"I can't give answers to everybody. I want to enjoy these 10 days of training. We will see about my future after the internationals, during my vacation."