The 26-year-old joined the Giallorossi on loan in the January transfer window, with Roma having the option to turn the deal permanent at the end of the season for just €3.5 million.
However, Grenier made just six Serie A appearances under Luciano Spalletti – five of them coming off the bench – and that has resulted in his expected return back to Lyon, as confirmed by his agent.
“The situation with Grenier is very simple,” agent Giuseppe Colombo told Corriere Giallorosso. “Roma had an option to buy at a pre-set figure, but did not exercise that option by the May 31 deadline.
“Therefore, Grenier is now to all intents and purposes a Lyon player once more. Clement gave everything in these four months and didn’t miss a single training session.
“If Roma want him, they’ll now have to negotiate with Olympique Lyonnais.”
Grenier was one of Lyon’s best players during the 2013/14 season and earned a number of caps for France off the back of some impressive performances.
The midfielder was even selected for the 2014 World Cup squad, but after being forced to pull out through injury just before the tournament, Grenier’s career has been nothing but bad luck.
Several injuries have hampered his career and a player who was once constantly linked with a move to Arsenal, is now struggling to find a place to settle down.