Arsène Wenger admitted "there is something missing" in attack after Arsenal departed the Britannia Stadium as one of only two Premier League clubs yet to score this season, but the Frenchman believes that the whole team, and not just Lukas Podolski and Olivier Giroud, must weigh in with the goals to compensate for Robin van Persie's departure.

The Arsenal manager remains confident that Podolski, Giroud and Santi Cazorla will come good, but he said that they need more playing time together to develop an understanding. Wenger also defended his track record when it comes to replacing centre forwards and pointed out that he had faced similar questions about where Arsenal's goal threat would come from when Thierry Henry joined Barcelona in 2007.

Asked about the effect Van Persie's move to Manchester United has had on Arsenal, Wenger replied: "Look, if you want to convince me that we lost an exceptional player, you are wasting your time. I was the first to say that.

"We have to find a way to get around that by sharing more goals than we did before with Van Persie. I think we can do that. Giroud scored 20 [last season], Podolski scored 20 [last season]. We will get some goals, I am convinced, from [Abou] Diaby, [Aaron] Ramsey, [Theo] Walcott and Gervinho. So we have, of course, to share that around a little bit."

He added: "I would just like to say, I had the same questions when Thierry Henry left. Exactly the same. And at the start of last season I had to answer: 'Why do you play Van Persie as centre forward, he's not a centre forward?' So you always have to take that into perspective. What for me is positive is that you feel there is potential there."

Wenger accepted, however, that things are not quite clicking as an attacking unit at the moment. "[There is] an understanding missing because you have Cazorla, Podolski and Giroud, and one month ago they didn't know each other, so that will come. We have some work to do on the training ground but I believe as a group you can feel the potential. But you can see as well something is missing, we are not spontaneous enough in some situations.

"It can be very quick [that the understanding comes]. The more you speak about the problem, the bigger it becomes in our game. I think Giroud has not to think that he has to replace Van Persie with the number of goals he has to score. We want to play as a team and if we play well as a team we will score goals."

Wenger, who ruled out a move for Newcastle United's Cheik Tioté, refused to be downbeat despite starting the season with two goalless draws. "I'm very positive about my team," he said. "People will say you didn't score for two games, I cannot deny that. I feel we played against two teams who were highly focused to defend. I believe we can be a good surprise in this championship."