The Lyon coach acknowledges the midfielder's special talents but urges his young star, admired by Arsenal, to remain grounded after catching the eye against Real Madrid
After bursting onto the scene last season, the midfielder has continued his great run of form with an impressive pre-season, including a wonderful goal in the 2-2 draw with Real Madrid - but his coach has urged him to remain grounded.
Arsenal went public with their interest in Grenier earlier this summer but the youngster snubbed the Gunners to sign a new contract with the Ligue 1 outfit.
"I'm not afraid of the hype - it's essential to his growth," Garde told L'Equipe. "He will have to learn to manage his reputation, focus on his game and continue to do the simple things.
"The more he progresses, the more we'll expect extraordinary things from him butn in a game with such players like Juninho who can change a game, there are plenty of simple things that we tend to forget."
Garde added his desire to see the 22-year-old produce on a more consistent basis and improve on a record of seven goals and five assists in 28 league matches last season.
"He's one of those players who can change a game around," the Lyon boss enthused.
"I've known for a while now that he has something special butn like many players at the age of 17, I remember he was a temperamental player who was talented - but in cycles."