Wenger demands more

[sake]

Manager Arsene Wenger has challenged his Arsenal side to add the "fraction more'' to their game and deliver a winning performance away to Anderlecht, where rookie goalkeeper Emiliano Martinez is set for a Champions League debut.

The Gunners needed a stoppage-time equaliser from Danny Welbeck to salvage a 2-2 Barclays Premier League draw with Hull at the weekend having again conceded sloppy goals.

Arsenal - without both first-choice keeper Wojciech Szczesny through suspension and Colombia international David Ospina due to injury - cannot afford any more costly errors at the Constant Vanden Stock Stadium in Brussels if they are to stay on course for qualification out of Group D, having already been well beaten away to leaders Borussia Dortmund in their opener.

"We have lost only one game in the Premier League, but we have not enough points with what we produced,'' said Wenger, whose side have won just two from eight league matches.

"Top-level performance is to make the maximum with your potential and sometimes in games you need a fraction more, so that is what we want to do - give a fraction more to be really efficient in what we do.''

Wenger, who will have England international Calum Chambers available again after a one-match domestic suspension, added: "We want to become more efficient, where we dominate so much, like we did on Saturday, and lose a bit of our defensive urgency.

"If you look overall at the quality of the players we have, I think we can be very efficient defensively.''

Although Martinez, 22, has just two Arsenal appearances - in the League Cup in late 2012 - Wenger believes spending a loan period in the hustle-and-bustle of the Sky Bet Championship with Sheffield Wednesday will have served as good preparation for what awaits in Brussels.