The Gunners moved back into the top half courtesy of yesterday's 2-1 home win over Sunderland and the Czech Republic skipper is confident that a Champions League spot can still be saved despite currently sitting six points out of that zone.
"It was a very difficult start for us but the season is very long and I don't feel it is impossible for us (to finish in the top four)," he said.
"Every game is very difficult and you have to fight hard. The season is long and there are so many points to play for.
"Arsenal is a great club that always has to play for the top four. Even if we started badly, it must still be our aim."