Chelsea goalkeeper Petr Cech has complete faith in William Gallas' honesty after his former team-mate sparked a row with his public criticism of Arsenal.
Czech Republic keeper Cech played with Gallas for two years at Stamford Bridge before the defender moved to the Gunners in August 2006 as part of the deal that saw Ashley Cole go in the opposite direction. He has no doubt Gallas was only speaking his mind when he made his feelings public.
"I know William and if he says it then it is true," Cech told The Sun. "I've played with him and know him well."
He added: "William is a great guy and he is passionate about football but I don't agree players should talk publicly about what is discussed in the dressing room.
"William must have felt very frustrated to want to talk publicly about it.
"As a person he says what he feels.
"And that's why people look at him differently because when he speaks, it comes from the heart."
The 26-year-old also believes Arsenal are undermined by their lack of fight, saying: "Arsenal play beautiful football at times but when you don't manage to move your opponents with your football, you need to fight and be physical. And this is what Arsenal are missing."