Despite a busy schedule for Arsene Wenger's side in the past week, Demel is in no doubt that they will be up for the challenge of beating West Ham.
"When you play for Arsenal, you have to be used to be playing two games a week so I don't think there is fatigue. They have to get a result and we have to do our best to get a point or more," he told the club's official website.
"During the week we all follow the football news, but the most important is West Ham and what are we going to get out of the game. We know it's a hard time for Arsenal, but they are playing at home, so I'm sure they want to show their fans they're ready for the end of the season."
West Ham are currently in 11th place in the Premier League table.