Unai Emery admits Arsenal will find it difficult to claim the final Champions League spot in the Premier League.
The Gunners currently sit sixth in the league, three points behind Chelsea and fourth place and return to Europa League duties next week.
With Chelsea playing Manchester City on Sunday, Arsenal will have the chance to close the gap if the Blues fail to pick up points in Manchester.
Emery’s team has been plagued by inconsistency this season, but the Spaniard urged his players to keep believing they can finish in the top four.
‘There are teams better than us,’ said Emery.
‘Are we outsiders now for a top-four finish? Yes, we are sixth. That’s the reality.
‘We still have to believe we can finish in the top four even while knowing it will be difficult for us.
‘There’s a big difference between the top three (Liverpool, Manchester City and Tottenham) and us, but we are a lot closer to Chelsea and Manchester United.
‘The gap to the top three is too big but the other two? The possibility to catch them is there because we are only three points behind Chelsea and one point behind Manchester United.
‘We still have to believe that we can do it.’
Arsenal were able to claim an important win over Chelsea last month in the race for the top four.