Arsene Wenger says it would be "an easy excuse" to blame Arsenal's poor form on the uncertainty over his future and has called on his players to fight to improve performances.

A run of four Premier League defeats in five matches has seen the Gunners drop to sixth in the table ahead of Sunday's clash with Manchester City, and failing to beat Pep Guardiola's side would leave them facing a huge challenge to qualify for the Champions League.

Wenger stated after the 3-1 defeat to West Brom this month that he had made up his mind over whether or not he will sign a new contract, though neither he nor the club have yet to make any announcement.

The persistent speculation has also cast the futures of some Arsenal stars into doubt, with contract talks with Mesut Ozil and Alexis Sanchez on hold until the end of the season, while it has been suggested that other senior players have become distracted by the air of uncertainty.

Wenger accepts that the season has been a disappointment to date but insists that his decision to stay or go should not be considered a mitigating factor behind their slip in standards.

"It would be an easy excuse," he told Sky Sports. "Whether I stay two years or 10 years I have exactly the same commitment and the same desire to win the next game. I believe we are in a position where we do not have to find easy excuses. Our job is to perform.

"The worst you accuse me of, having done 20 years at the club, is creating instability. If I have created anything it is stability. The situation is not sorted out and I believe it's important we focus on what is essential. You know my attachment to this club and at the moment it is as it is and I do not see any escape route to have less responsibility because of that. You have to be men and focus on what matters and what is our job.

"You do not need to concede a corner because I have not signed a five-year contract. You defend on a corner no matter if your manager is has a one month or 10-year contract. We have to look at ourselves and believe in our qualities because if you look at our offensive numbers they are very positive in the league. We need to defend better and that's why we've lost some big games. When I say defend better it's not just the defenders it's the team as a whole.

"What's gone wrong? We don't defend well enough. We can still have to turn this around by the end of the season. It's a strange season because we played 20 games unbeaten and then you slip slightly away in one game, two games and suddenly it becomes a problem.

"It's not gone in the way we expected but it can still be an acceptable season. We still have a good chance to finish in the top four and we are in the semi-final of the FA Cup."