Since the Germany international's deadline-day move from Real Madrid, the Gunners have gone from strength to strength and sit top of the Premier League thanks in part to his four goals and seven assists.
And Henry, who scored 228 goals for the north Londoners, believes that he has added even more class to their midfield.
|20/1||Mesut Ozil is 20/1 with William Hill to score the first goal in an Arsenal win over Manchester City|
"He will share the ball. He can find a guy who is quick, a target striker. He can play any type of ball.
"He has the thing you want from a midfielder: He has time. It seems like he is playing on his own in his garden.
"He brought that composure on the ball that you need. I think he brought that to Arsenal, him coming with his name. You have got to back it up [and] he did back it up."
Asked what had impressed him the most about Arsenal’s displays this season, Henry replied: "Just the belief that they have again, knowing that they can beat any team at any moment. I think, if you remember well, the game against Bayern Munich [last season], away from home, did a lot for them.
"Knowing that they can beat the champions – [though] they didn't know it at the time – away from home, and well, did a lot for the team. Since that game, everything changed, for me."