The 21-year-old says that the Gunners need to take the game to their opponents to win the Premier League clash.
"Chelsea is a big game," he told Arsenal's official website. "They had a tough game on Wednesday night as well so we have to recover and get up for Sunday.
"We won there last year so we know we can do it. We have to take our game to them. We have to play our football.
"We know they've got great players and individual players who can change the game, but I think we have as well, so we'll have to be confident going there."
Arsenal are currently sixth in the league table, while Chelsea are third.