Spanish full-back Hector Bellerin insisted Arsenal have the depth to cope with the loss of injured forward Alexis Sanchez.
A hamstring injury forced Sanchez from the field in Arsenal's 1-1 draw at Norwich City in the Premier League on Sunday.
"I have said it before, there is great depth in the team," he told Arsenal Player.
"There are a lot of young players in the team waiting to come through, and we have a lot of quality training with us every day.
"They are ready to step up so obviously every single player on the bench can do the same job as every single player in the starting XI.
"We don't need to worry about [the injuries to Alexis and Koscielny]. The only thing we need to do is go out onto the pitch with the right mentality, it does not matter who we play."
