The Arsenal legend lasted three months as coach at ASM.
But former Manchester City trainee Lopes told Record: "I learned a lot with Henry but I feel that I could have learned more if we had worked longer together.
"He has very good game ideas, but he came at a time when a lot of players were injured. And for the game he wanted to practice, he was missing the necessary pieces.
"But I predict a great future as a coach."