Arsenal defender William Gallas does not feel guilty despite his vicious challenge on Bolton's Mark Davies last week. Gallas' tackle, which almost caused a serious injury to Davies, marred Arsenal's 4-2 win over Wanderers and forced manager Arsene Wenger to apologize after the game. Bolton manager Owen Coyle also slammed Gallas, describing his challenge as an 'assault'. However, the Frenchman has no regrets despite the critics. "I have a clear conscience over what happened," he told the Sunday People. "Football is a hard sport and things happen in every game. The referee didn't even blow for a foul. "I am sorry if the player is injured because I have also been injured in my career. "The Bolton criticism is understandable. It's the action of a team upset at having lost an important game they were winning 2-0."