Gallas: Close-knit squad key to Arsenal success
Alex Hleb and Cesc Fabregas have been superb in Arsenal's midfield this season and Gallas explained: "It helps that they are such good friends off the pitch as well as on it.
"When you're friends off the pitch you get to understand each other well and that can help you play together. It's the same with [Tomas] Rosicky and Robin van Persie as well. Those combinations allow us to play as a very good team."