'We can't slip again'
Manchester City striker Wilfried Bony (above) believes the champions now have to target victory in every remaining game to retain their title.
City remain five points behind Premier League leaders Chelsea after slipping to a 2-1 defeat at Liverpool on Sunday.
The London side also have a game in hand and City have just 11 matches left to turn the situation around.
Bony said: "It is disappointing, we have made it difficult for ourselves now.
"If Chelsea win (their game in hand) it will be more difficult for us to get close to them. But we still hope - there are 11 more games and every game we just have to win, be positive for the rest of the league and try to get maximum points.
"We need to win, win, win and hope Chelsea will drop some points. It is a difficult moment for us but we still hope we can do it."
Arsenal manager Arsene Wenger believes the way in which his side recovered from their European nightmare to beat Everton 2-0 with a determined display at the Emirates Stadium could prove "vital" to the rest of the campaign.
Olivier Giroud found his range again with a fine volley on 39 minutes and a late deflected effort from substitute Tomas Rosicky secured all three points.
The Gunners are now just four points behind second-placed Manchester City and one ahead of Manchester United as they prepare for a midweek trip to relegation battlers QPR at the start of a crucial run of fixtures.
"It was vital for us, for the rest of the season, to win the game," said Wenger.
"What was very important was that we had a mentally united response, we showed that and not everybody can produce that after such a disappointment."