Arsene Wenger insists Arsenal will find a way to replace Robin van Persie despite being held to a second straight goalless draw, by Stoke, at the start of the Premier League season.
Star striker Van Persie scored 37 goals in all competitions last term but left to join top-flight rivals Manchester United in a reported £24 million (HK$294 million) move.
Wenger saw his side struggle in attack against a determined Stoke at the Britannia Stadium, but remains confident that Lukas Podolski, Olivier Giroud and Gervinho, supported by attacking midfielder Santi Cazorla, will eventually all come good.
"The understanding was missing," said Wenger. "One month ago Cazorla and Podolski did not know each other. There is work to be done on the training ground. There is potential but something is missing.
"I am very positive about my team. We haven't scored in two games, but we played against two units that defended very well."
The Frenchman added: "If you want to convince [me] we've lost an exceptional player you are wasting your time. I was the first to say that. We must find a way around that by sharing around the goals we scored with Van Persie. I've worked for 30 years on the football pitch every day and I know what it takes to improve a football player. Giroud can't think like he should replace Van Persie. I had the same questions when Thierry Henry left. We have to take perspective."
Wenger felt both Stoke and Sunderland, Arsenal's opponents the previous week, played defensively to nullify the Gunners' attacking threats.
"I feel we played against two highly focused defensive sides. Other games are more open. Some other teams go forward and open their games.
"The teams we played against like it was a cup final for 90 minutes. But we behaved like men who were ready for a fight.
"Offensively we have some work to do as we missed accuracy in the final third. We should have won the game 1-0 but credit to Stoke, they defended really well with experience at the back.
"Defensively we had no problem, they had one good chance in the second half but apart from that we did very well. If they have six basketball players at set pieces, it's very difficult!"
Wenger's opposite number Tony Pulis was delighted with Stoke's second draw of the season. "I'm really pleased with a point," he said. "But we were disappointing going forward and looked unbalanced. The attitude was first-class. As a football club we must never become blasé."