Arsenal right-back Debuchy could to be allowed to leave this month and Garde has spoken to Gunners boss Arsene Wenger about the possibility of a move.
Debuchy, 30, has made just seven appearances for Arsenal this season and played only twice in the Barclays Premier League.
"I had a conversation with Arsene a few days ago about some of the players and Mathieu Debuchy was among these players," said Garde, who played under Wenger at Arsenal.
"It's too early and it won't help me or anyone to go forward in this style to make too many more comments."